commit: 770b83ac1e500d10ce8988b78eb9d9519a9ae9bc Author: Mike Pagano <mpagano <AT> gentoo <DOT> org> AuthorDate: Wed Mar 15 19:21:48 2017 +0000 Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org> CommitDate: Wed Mar 15 19:21:48 2017 +0000 URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=770b83ac
Linux patch 4.9.15 0000_README | 4 + 1014_linux-4.9.15.patch | 2838 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 2842 insertions(+) diff --git a/0000_README b/0000_README index 0932a46..03b9d95 100644 --- a/0000_README +++ b/0000_README @@ -99,6 +99,10 @@ Patch: 1013_linux-4.9.14.patch From: http://www.kernel.org Desc: Linux 4.9.14 +Patch: 1014_linux-4.9.15.patch +From: http://www.kernel.org +Desc: Linux 4.9.15 + Patch: 1500_XATTR_USER_PREFIX.patch From: https://bugs.gentoo.org/show_bug.cgi?id=470644 Desc: Support for namespace user.pax.* on tmpfs. diff --git a/1014_linux-4.9.15.patch b/1014_linux-4.9.15.patch new file mode 100644 index 0000000..c4ebc77 --- /dev/null +++ b/1014_linux-4.9.15.patch @@ -0,0 +1,2838 @@ +diff --git a/Makefile b/Makefile +index 5e7706e94622..03df4fcacdf2 100644 +--- a/Makefile ++++ b/Makefile +@@ -1,6 +1,6 @@ + VERSION = 4 + PATCHLEVEL = 9 +-SUBLEVEL = 14 ++SUBLEVEL = 15 + EXTRAVERSION = + NAME = Roaring Lionus + +diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h +index 602af692efdc..6bcbbece082b 100644 +--- a/arch/s390/include/asm/processor.h ++++ b/arch/s390/include/asm/processor.h +@@ -89,7 +89,8 @@ extern void execve_tail(void); + * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit. + */ + +-#define TASK_SIZE_OF(tsk) ((tsk)->mm->context.asce_limit) ++#define TASK_SIZE_OF(tsk) ((tsk)->mm ? \ ++ (tsk)->mm->context.asce_limit : TASK_MAX_SIZE) + #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \ + (1UL << 30) : (1UL << 41)) + #define TASK_SIZE TASK_SIZE_OF(current) +diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c +index f9293bfefb7f..408b4f4fda0f 100644 +--- a/arch/s390/kernel/crash_dump.c ++++ b/arch/s390/kernel/crash_dump.c +@@ -329,7 +329,11 @@ static void *nt_init_name(void *buf, Elf64_Word type, void *desc, int d_len, + + static inline void *nt_init(void *buf, Elf64_Word type, void *desc, int d_len) + { +- return nt_init_name(buf, type, desc, d_len, KEXEC_CORE_NOTE_NAME); ++ const char *note_name = "LINUX"; ++ ++ if (type == NT_PRPSINFO || type == NT_PRSTATUS || type == NT_PRFPREG) ++ note_name = KEXEC_CORE_NOTE_NAME; ++ return nt_init_name(buf, type, desc, d_len, note_name); + } + + /* +diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c +index d027f2eb3559..e974e53ab597 100644 +--- a/arch/s390/kernel/setup.c ++++ b/arch/s390/kernel/setup.c +@@ -819,10 +819,10 @@ static void __init setup_randomness(void) + { + struct sysinfo_3_2_2 *vmms; + +- vmms = (struct sysinfo_3_2_2 *) alloc_page(GFP_KERNEL); +- if (vmms && stsi(vmms, 3, 2, 2) == 0 && vmms->count) +- add_device_randomness(&vmms, vmms->count); +- free_page((unsigned long) vmms); ++ vmms = (struct sysinfo_3_2_2 *) memblock_alloc(PAGE_SIZE, PAGE_SIZE); ++ if (stsi(vmms, 3, 2, 2) == 0 && vmms->count) ++ add_device_randomness(&vmms->vm, sizeof(vmms->vm[0]) * vmms->count); ++ memblock_free((unsigned long) vmms, PAGE_SIZE); + } + + /* +diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c +index 47a1de77b18d..5ba494ed18c1 100644 +--- a/arch/s390/kvm/kvm-s390.c ++++ b/arch/s390/kvm/kvm-s390.c +@@ -442,6 +442,9 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, + struct kvm_memory_slot *memslot; + int is_dirty = 0; + ++ if (kvm_is_ucontrol(kvm)) ++ return -EINVAL; ++ + mutex_lock(&kvm->slots_lock); + + r = -EINVAL; +diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h +index 6fa85944af83..fc5abff9b7fd 100644 +--- a/arch/x86/include/asm/tlbflush.h ++++ b/arch/x86/include/asm/tlbflush.h +@@ -188,7 +188,7 @@ static inline void __native_flush_tlb_single(unsigned long addr) + + static inline void __flush_tlb_all(void) + { +- if (static_cpu_has(X86_FEATURE_PGE)) ++ if (boot_cpu_has(X86_FEATURE_PGE)) + __flush_tlb_global(); + else + __flush_tlb(); +diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c +index 64774f419c72..69b8f8a5ecb0 100644 +--- a/arch/x86/kvm/vmx.c ++++ b/arch/x86/kvm/vmx.c +@@ -3693,7 +3693,7 @@ static void fix_rmode_seg(int seg, struct kvm_segment *save) + } + + vmcs_write16(sf->selector, var.selector); +- vmcs_write32(sf->base, var.base); ++ vmcs_writel(sf->base, var.base); + vmcs_write32(sf->limit, var.limit); + vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(&var)); + } +@@ -8202,7 +8202,7 @@ static void kvm_flush_pml_buffers(struct kvm *kvm) + static void vmx_dump_sel(char *name, uint32_t sel) + { + pr_err("%s sel=0x%04x, attr=0x%05x, limit=0x%08x, base=0x%016lx\n", +- name, vmcs_read32(sel), ++ name, vmcs_read16(sel), + vmcs_read32(sel + GUEST_ES_AR_BYTES - GUEST_ES_SELECTOR), + vmcs_read32(sel + GUEST_ES_LIMIT - GUEST_ES_SELECTOR), + vmcs_readl(sel + GUEST_ES_BASE - GUEST_ES_SELECTOR)); +diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c +index 0d4fb3ebbbac..1680768d392c 100644 +--- a/arch/x86/mm/gup.c ++++ b/arch/x86/mm/gup.c +@@ -120,6 +120,11 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr, + return 0; + } + ++ if (!pte_allows_gup(pte_val(pte), write)) { ++ pte_unmap(ptep); ++ return 0; ++ } ++ + if (pte_devmap(pte)) { + pgmap = get_dev_pagemap(pte_pfn(pte), pgmap); + if (unlikely(!pgmap)) { +@@ -127,8 +132,7 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr, + pte_unmap(ptep); + return 0; + } +- } else if (!pte_allows_gup(pte_val(pte), write) || +- pte_special(pte)) { ++ } else if (pte_special(pte)) { + pte_unmap(ptep); + return 0; + } +diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c +index 32cdc2c52e98..a45d32abea26 100644 +--- a/arch/xtensa/kernel/setup.c ++++ b/arch/xtensa/kernel/setup.c +@@ -133,6 +133,8 @@ static int __init parse_tag_initrd(const bp_tag_t* tag) + + __tagtable(BP_TAG_INITRD, parse_tag_initrd); + ++#endif /* CONFIG_BLK_DEV_INITRD */ ++ + #ifdef CONFIG_OF + + static int __init parse_tag_fdt(const bp_tag_t *tag) +@@ -145,8 +147,6 @@ __tagtable(BP_TAG_FDT, parse_tag_fdt); + + #endif /* CONFIG_OF */ + +-#endif /* CONFIG_BLK_DEV_INITRD */ +- + static int __init parse_tag_cmdline(const bp_tag_t* tag) + { + strlcpy(command_line, (char *)(tag->data), COMMAND_LINE_SIZE); +diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c +index 6eb6733a7a5c..d1664df001f8 100644 +--- a/drivers/acpi/nfit/core.c ++++ b/drivers/acpi/nfit/core.c +@@ -1603,7 +1603,7 @@ static size_t sizeof_nfit_set_info(int num_mappings) + + num_mappings * sizeof(struct nfit_set_info_map); + } + +-static int cmp_map(const void *m0, const void *m1) ++static int cmp_map_compat(const void *m0, const void *m1) + { + const struct nfit_set_info_map *map0 = m0; + const struct nfit_set_info_map *map1 = m1; +@@ -1612,6 +1612,14 @@ static int cmp_map(const void *m0, const void *m1) + sizeof(u64)); + } + ++static int cmp_map(const void *m0, const void *m1) ++{ ++ const struct nfit_set_info_map *map0 = m0; ++ const struct nfit_set_info_map *map1 = m1; ++ ++ return map0->region_offset - map1->region_offset; ++} ++ + /* Retrieve the nth entry referencing this spa */ + static struct acpi_nfit_memory_map *memdev_from_spa( + struct acpi_nfit_desc *acpi_desc, u16 range_index, int n) +@@ -1667,6 +1675,12 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, + sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map), + cmp_map, NULL); + nd_set->cookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0); ++ ++ /* support namespaces created with the wrong sort order */ ++ sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map), ++ cmp_map_compat, NULL); ++ nd_set->altcookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0); ++ + ndr_desc->nd_set = nd_set; + devm_kfree(dev, info); + +diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c +index fadba88745dc..b793853ff05f 100644 +--- a/drivers/bluetooth/ath3k.c ++++ b/drivers/bluetooth/ath3k.c +@@ -94,6 +94,7 @@ static const struct usb_device_id ath3k_table[] = { + { USB_DEVICE(0x04CA, 0x300f) }, + { USB_DEVICE(0x04CA, 0x3010) }, + { USB_DEVICE(0x04CA, 0x3014) }, ++ { USB_DEVICE(0x04CA, 0x3018) }, + { USB_DEVICE(0x0930, 0x0219) }, + { USB_DEVICE(0x0930, 0x021c) }, + { USB_DEVICE(0x0930, 0x0220) }, +@@ -162,6 +163,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = { + { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, ++ { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, +diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c +index 2f633df9f4e6..dd220fad366c 100644 +--- a/drivers/bluetooth/btusb.c ++++ b/drivers/bluetooth/btusb.c +@@ -209,6 +209,7 @@ static const struct usb_device_id blacklist_table[] = { + { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, ++ { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, +diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c +index b9629b2bfc05..d1651a50c349 100644 +--- a/drivers/dma/imx-sdma.c ++++ b/drivers/dma/imx-sdma.c +@@ -298,6 +298,7 @@ struct sdma_engine; + * @event_id1 for channels that use 2 events + * @word_size peripheral access size + * @buf_tail ID of the buffer that was processed ++ * @buf_ptail ID of the previous buffer that was processed + * @num_bd max NUM_BD. number of descriptors currently handling + */ + struct sdma_channel { +@@ -309,6 +310,7 @@ struct sdma_channel { + unsigned int event_id1; + enum dma_slave_buswidth word_size; + unsigned int buf_tail; ++ unsigned int buf_ptail; + unsigned int num_bd; + unsigned int period_len; + struct sdma_buffer_descriptor *bd; +@@ -700,6 +702,8 @@ static void sdma_update_channel_loop(struct sdma_channel *sdmac) + sdmac->chn_real_count = bd->mode.count; + bd->mode.status |= BD_DONE; + bd->mode.count = sdmac->period_len; ++ sdmac->buf_ptail = sdmac->buf_tail; ++ sdmac->buf_tail = (sdmac->buf_tail + 1) % sdmac->num_bd; + + /* + * The callback is called from the interrupt context in order +@@ -710,9 +714,6 @@ static void sdma_update_channel_loop(struct sdma_channel *sdmac) + + dmaengine_desc_get_callback_invoke(&sdmac->desc, NULL); + +- sdmac->buf_tail++; +- sdmac->buf_tail %= sdmac->num_bd; +- + if (error) + sdmac->status = old_status; + } +@@ -1186,6 +1187,8 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg( + sdmac->flags = 0; + + sdmac->buf_tail = 0; ++ sdmac->buf_ptail = 0; ++ sdmac->chn_real_count = 0; + + dev_dbg(sdma->dev, "setting up %d entries for channel %d.\n", + sg_len, channel); +@@ -1288,6 +1291,8 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic( + sdmac->status = DMA_IN_PROGRESS; + + sdmac->buf_tail = 0; ++ sdmac->buf_ptail = 0; ++ sdmac->chn_real_count = 0; + sdmac->period_len = period_len; + + sdmac->flags |= IMX_DMA_SG_LOOP; +@@ -1385,7 +1390,7 @@ static enum dma_status sdma_tx_status(struct dma_chan *chan, + u32 residue; + + if (sdmac->flags & IMX_DMA_SG_LOOP) +- residue = (sdmac->num_bd - sdmac->buf_tail) * ++ residue = (sdmac->num_bd - sdmac->buf_ptail) * + sdmac->period_len - sdmac->chn_real_count; + else + residue = sdmac->chn_count - sdmac->chn_real_count; +diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +index 7ddc32127d88..64a1df62cc65 100644 +--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +@@ -3814,9 +3814,15 @@ static void dce_v11_0_encoder_add(struct amdgpu_device *adev, + default: + encoder->possible_crtcs = 0x3; + break; ++ case 3: ++ encoder->possible_crtcs = 0x7; ++ break; + case 4: + encoder->possible_crtcs = 0xf; + break; ++ case 5: ++ encoder->possible_crtcs = 0x1f; ++ break; + case 6: + encoder->possible_crtcs = 0x3f; + break; +diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c +index 810c51d92b99..30672a3df8a9 100644 +--- a/drivers/gpu/drm/ast/ast_post.c ++++ b/drivers/gpu/drm/ast/ast_post.c +@@ -58,13 +58,9 @@ bool ast_is_vga_enabled(struct drm_device *dev) + /* TODO 1180 */ + } else { + ch = ast_io_read8(ast, AST_IO_VGA_ENABLE_PORT); +- if (ch) { +- ast_open_key(ast); +- ch = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0xff); +- return ch & 0x04; +- } ++ return !!(ch & 0x01); + } +- return 0; ++ return false; + } + + static const u8 extreginfo[] = { 0x0f, 0x04, 0x1c, 0xff }; +@@ -375,8 +371,8 @@ void ast_post_gpu(struct drm_device *dev) + pci_write_config_dword(ast->dev->pdev, 0x04, reg); + + ast_enable_vga(dev); +- ast_enable_mmio(dev); + ast_open_key(ast); ++ ast_enable_mmio(dev); + ast_set_def_ext_reg(dev); + + if (ast->chip == AST2300 || ast->chip == AST2400) +@@ -1630,12 +1626,44 @@ static void ast_init_dram_2300(struct drm_device *dev) + temp |= 0x73; + ast_write32(ast, 0x12008, temp); + ++ param.dram_freq = 396; + param.dram_type = AST_DDR3; ++ temp = ast_mindwm(ast, 0x1e6e2070); + if (temp & 0x01000000) + param.dram_type = AST_DDR2; +- param.dram_chipid = ast->dram_type; +- param.dram_freq = ast->mclk; +- param.vram_size = ast->vram_size; ++ switch (temp & 0x18000000) { ++ case 0: ++ param.dram_chipid = AST_DRAM_512Mx16; ++ break; ++ default: ++ case 0x08000000: ++ param.dram_chipid = AST_DRAM_1Gx16; ++ break; ++ case 0x10000000: ++ param.dram_chipid = AST_DRAM_2Gx16; ++ break; ++ case 0x18000000: ++ param.dram_chipid = AST_DRAM_4Gx16; ++ break; ++ } ++ switch (temp & 0x0c) { ++ default: ++ case 0x00: ++ param.vram_size = AST_VIDMEM_SIZE_8M; ++ break; ++ ++ case 0x04: ++ param.vram_size = AST_VIDMEM_SIZE_16M; ++ break; ++ ++ case 0x08: ++ param.vram_size = AST_VIDMEM_SIZE_32M; ++ break; ++ ++ case 0x0c: ++ param.vram_size = AST_VIDMEM_SIZE_64M; ++ break; ++ } + + if (param.dram_type == AST_DDR3) { + get_ddr3_info(ast, ¶m); +diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c +index a05bb3891119..2e42a0584a84 100644 +--- a/drivers/gpu/drm/drm_atomic_helper.c ++++ b/drivers/gpu/drm/drm_atomic_helper.c +@@ -362,7 +362,7 @@ mode_fixup(struct drm_atomic_state *state) + struct drm_connector *connector; + struct drm_connector_state *conn_state; + int i; +- bool ret; ++ int ret; + + for_each_crtc_in_state(state, crtc, crtc_state, i) { + if (!crtc_state->mode_changed && +diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c +index ec77bd3e1f08..7491180698d1 100644 +--- a/drivers/gpu/drm/drm_edid.c ++++ b/drivers/gpu/drm/drm_edid.c +@@ -145,6 +145,9 @@ static struct edid_quirk { + + /* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */ + { "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC }, ++ ++ /* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/ ++ { "ETR", 13896, EDID_QUIRK_FORCE_8BPC }, + }; + + /* +diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c +index 6c75e62c0b22..6a48d6637e5c 100644 +--- a/drivers/gpu/drm/drm_fb_helper.c ++++ b/drivers/gpu/drm/drm_fb_helper.c +@@ -848,6 +848,9 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) + if (!drm_fbdev_emulation) + return; + ++ cancel_work_sync(&fb_helper->resume_work); ++ cancel_work_sync(&fb_helper->dirty_work); ++ + if (!list_empty(&fb_helper->kernel_fb_list)) { + list_del(&fb_helper->kernel_fb_list); + if (list_empty(&kernel_fb_helper_list)) { +diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c +index 9a71ed546b90..f46aac1e85fb 100644 +--- a/drivers/gpu/drm/i915/i915_gem_stolen.c ++++ b/drivers/gpu/drm/i915/i915_gem_stolen.c +@@ -415,6 +415,11 @@ int i915_gem_init_stolen(struct drm_device *dev) + + mutex_init(&dev_priv->mm.stolen_lock); + ++ if (intel_vgpu_active(dev_priv)) { ++ DRM_INFO("iGVT-g active, disabling use of stolen memory\n"); ++ return 0; ++ } ++ + #ifdef CONFIG_INTEL_IOMMU + if (intel_iommu_gfx_mapped && INTEL_INFO(dev)->gen < 8) { + DRM_INFO("DMAR active, disabling use of stolen memory\n"); +diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c +index 055525013d2f..7b06280b23aa 100644 +--- a/drivers/gpu/drm/i915/intel_dp.c ++++ b/drivers/gpu/drm/i915/intel_dp.c +@@ -2832,6 +2832,9 @@ static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) + enum pipe pipe = intel_dp->pps_pipe; + i915_reg_t pp_on_reg = PP_ON_DELAYS(pipe); + ++ if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) ++ return; ++ + edp_panel_vdd_off_sync(intel_dp); + + /* +@@ -2859,9 +2862,6 @@ static void vlv_steal_power_sequencer(struct drm_device *dev, + + lockdep_assert_held(&dev_priv->pps_mutex); + +- if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) +- return; +- + for_each_intel_encoder(dev, encoder) { + struct intel_dp *intel_dp; + enum port port; +diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c +index 7acbbbf97833..4534e4cadccf 100644 +--- a/drivers/gpu/drm/i915/intel_opregion.c ++++ b/drivers/gpu/drm/i915/intel_opregion.c +@@ -1031,7 +1031,18 @@ int intel_opregion_setup(struct drm_i915_private *dev_priv) + opregion->vbt_size = vbt_size; + } else { + vbt = base + OPREGION_VBT_OFFSET; +- vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET; ++ /* ++ * The VBT specification says that if the ASLE ext ++ * mailbox is not used its area is reserved, but ++ * on some CHT boards the VBT extends into the ++ * ASLE ext area. Allow this even though it is ++ * against the spec, so we do not end up rejecting ++ * the VBT on those boards (and end up not finding the ++ * LCD panel because of this). ++ */ ++ vbt_size = (mboxes & MBOX_ASLE_EXT) ? ++ OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; ++ vbt_size -= OPREGION_VBT_OFFSET; + if (intel_bios_is_valid_vbt(vbt, vbt_size)) { + DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); + opregion->vbt = vbt; +diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c +index 8fc088843e55..89cf0090feac 100644 +--- a/drivers/gpu/drm/imx/imx-tve.c ++++ b/drivers/gpu/drm/imx/imx-tve.c +@@ -98,6 +98,8 @@ + /* TVE_TST_MODE_REG */ + #define TVE_TVDAC_TEST_MODE_MASK (0x7 << 0) + ++#define IMX_TVE_DAC_VOLTAGE 2750000 ++ + enum { + TVE_MODE_TVOUT, + TVE_MODE_VGA, +@@ -628,9 +630,8 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data) + + tve->dac_reg = devm_regulator_get(dev, "dac"); + if (!IS_ERR(tve->dac_reg)) { +- ret = regulator_set_voltage(tve->dac_reg, 2750000, 2750000); +- if (ret) +- return ret; ++ if (regulator_get_voltage(tve->dac_reg) != IMX_TVE_DAC_VOLTAGE) ++ dev_warn(dev, "dac voltage is not %d uV\n", IMX_TVE_DAC_VOLTAGE); + ret = regulator_enable(tve->dac_reg); + if (ret) + return ret; +diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c +index fc6217dfe401..35cc16f9fec9 100644 +--- a/drivers/gpu/drm/ttm/ttm_bo.c ++++ b/drivers/gpu/drm/ttm/ttm_bo.c +@@ -1654,7 +1654,6 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) + struct ttm_buffer_object *bo; + int ret = -EBUSY; + int put_count; +- uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); + + spin_lock(&glob->lru_lock); + list_for_each_entry(bo, &glob->swap_lru, swap) { +@@ -1685,7 +1684,8 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) + * Move to system cached + */ + +- if ((bo->mem.placement & swap_placement) != swap_placement) { ++ if (bo->mem.mem_type != TTM_PL_SYSTEM || ++ bo->ttm->caching_state != tt_cached) { + struct ttm_mem_reg evict_mem; + + evict_mem = bo->mem; +diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +index 18061a4bc2f2..36005bdf3749 100644 +--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c ++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +@@ -199,9 +199,14 @@ static const struct drm_ioctl_desc vmw_ioctls[] = { + VMW_IOCTL_DEF(VMW_PRESENT_READBACK, + vmw_present_readback_ioctl, + DRM_MASTER | DRM_AUTH), ++ /* ++ * The permissions of the below ioctl are overridden in ++ * vmw_generic_ioctl(). We require either ++ * DRM_MASTER or capable(CAP_SYS_ADMIN). ++ */ + VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT, + vmw_kms_update_layout_ioctl, +- DRM_MASTER | DRM_CONTROL_ALLOW), ++ DRM_RENDER_ALLOW), + VMW_IOCTL_DEF(VMW_CREATE_SHADER, + vmw_shader_define_ioctl, + DRM_AUTH | DRM_RENDER_ALLOW), +@@ -1125,6 +1130,10 @@ static long vmw_generic_ioctl(struct file *filp, unsigned int cmd, + + return (long) vmw_execbuf_ioctl(dev, arg, file_priv, + _IOC_SIZE(cmd)); ++ } else if (nr == DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT) { ++ if (!drm_is_current_master(file_priv) && ++ !capable(CAP_SYS_ADMIN)) ++ return -EACCES; + } + + if (unlikely(ioctl->cmd != cmd)) +diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +index 1e59a486bba8..59ff4197173a 100644 +--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h ++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +@@ -41,9 +41,9 @@ + #include <drm/ttm/ttm_module.h> + #include "vmwgfx_fence.h" + +-#define VMWGFX_DRIVER_DATE "20160210" ++#define VMWGFX_DRIVER_DATE "20170221" + #define VMWGFX_DRIVER_MAJOR 2 +-#define VMWGFX_DRIVER_MINOR 11 ++#define VMWGFX_DRIVER_MINOR 12 + #define VMWGFX_DRIVER_PATCHLEVEL 0 + #define VMWGFX_FILE_PAGE_OFFSET 0x00100000 + #define VMWGFX_FIFO_STATIC_SIZE (1024*1024) +diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c +index 6e49a4dd99c0..e0a8216ecf2b 100644 +--- a/drivers/hv/hv.c ++++ b/drivers/hv/hv.c +@@ -220,7 +220,7 @@ int hv_init(void) + /* See if the hypercall page is already set */ + rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); + +- virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_EXEC); ++ virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_RX); + + if (!virtaddr) + goto cleanup; +diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c +index 729b0696626e..d61fd2c727c0 100644 +--- a/drivers/infiniband/hw/mlx5/srq.c ++++ b/drivers/infiniband/hw/mlx5/srq.c +@@ -165,8 +165,6 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq, + int err; + int i; + struct mlx5_wqe_srq_next_seg *next; +- int page_shift; +- int npages; + + err = mlx5_db_alloc(dev->mdev, &srq->db); + if (err) { +@@ -179,7 +177,6 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq, + err = -ENOMEM; + goto err_db; + } +- page_shift = srq->buf.page_shift; + + srq->head = 0; + srq->tail = srq->msrq.max - 1; +@@ -191,10 +188,8 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq, + cpu_to_be16((i + 1) & (srq->msrq.max - 1)); + } + +- npages = DIV_ROUND_UP(srq->buf.npages, 1 << (page_shift - PAGE_SHIFT)); +- mlx5_ib_dbg(dev, "buf_size %d, page_shift %d, npages %d, calc npages %d\n", +- buf_size, page_shift, srq->buf.npages, npages); +- in->pas = mlx5_vzalloc(sizeof(*in->pas) * npages); ++ mlx5_ib_dbg(dev, "srq->buf.page_shift = %d\n", srq->buf.page_shift); ++ in->pas = mlx5_vzalloc(sizeof(*in->pas) * srq->buf.npages); + if (!in->pas) { + err = -ENOMEM; + goto err_buf; +@@ -210,7 +205,7 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq, + } + srq->wq_sig = !!srq_signature; + +- in->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT; ++ in->log_page_size = srq->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT; + if (MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1 && + in->type == IB_SRQT_XRC) + in->user_index = MLX5_IB_DEFAULT_UIDX; +diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c +index 81a8080c18b3..0616a65f0d78 100644 +--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c ++++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c +@@ -1511,12 +1511,14 @@ static ssize_t set_mode(struct device *d, struct device_attribute *attr, + + ret = ipoib_set_mode(dev, buf); + +- rtnl_unlock(); +- +- if (!ret) +- return count; ++ /* The assumption is that the function ipoib_set_mode returned ++ * with the rtnl held by it, if not the value -EBUSY returned, ++ * then no need to rtnl_unlock ++ */ ++ if (ret != -EBUSY) ++ rtnl_unlock(); + +- return ret; ++ return (!ret || ret == -EBUSY) ? count : ret; + } + + static DEVICE_ATTR(mode, S_IWUSR | S_IRUGO, show_mode, set_mode); +diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c +index b58d9dca5c93..3ef7b8f049c4 100644 +--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c ++++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c +@@ -468,8 +468,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf) + priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM; + + ipoib_flush_paths(dev); +- rtnl_lock(); +- return 0; ++ return (!rtnl_trylock()) ? -EBUSY : 0; + } + + if (!strcmp(buf, "datagram\n")) { +@@ -478,8 +477,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf) + dev_set_mtu(dev, min(priv->mcast_mtu, dev->mtu)); + rtnl_unlock(); + ipoib_flush_paths(dev); +- rtnl_lock(); +- return 0; ++ return (!rtnl_trylock()) ? -EBUSY : 0; + } + + return -EINVAL; +@@ -703,6 +701,14 @@ int ipoib_check_sm_sendonly_fullmember_support(struct ipoib_dev_priv *priv) + return ret; + } + ++static void push_pseudo_header(struct sk_buff *skb, const char *daddr) ++{ ++ struct ipoib_pseudo_header *phdr; ++ ++ phdr = (struct ipoib_pseudo_header *)skb_push(skb, sizeof(*phdr)); ++ memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN); ++} ++ + void ipoib_flush_paths(struct net_device *dev) + { + struct ipoib_dev_priv *priv = netdev_priv(dev); +@@ -927,8 +933,7 @@ static void neigh_add_path(struct sk_buff *skb, u8 *daddr, + } + if (skb_queue_len(&neigh->queue) < + IPOIB_MAX_PATH_REC_QUEUE) { +- /* put pseudoheader back on for next time */ +- skb_push(skb, IPOIB_PSEUDO_LEN); ++ push_pseudo_header(skb, neigh->daddr); + __skb_queue_tail(&neigh->queue, skb); + } else { + ipoib_warn(priv, "queue length limit %d. Packet drop.\n", +@@ -946,10 +951,12 @@ static void neigh_add_path(struct sk_buff *skb, u8 *daddr, + + if (!path->query && path_rec_start(dev, path)) + goto err_path; +- if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) ++ if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) { ++ push_pseudo_header(skb, neigh->daddr); + __skb_queue_tail(&neigh->queue, skb); +- else ++ } else { + goto err_drop; ++ } + } + + spin_unlock_irqrestore(&priv->lock, flags); +@@ -985,8 +992,7 @@ static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev, + } + if (path) { + if (skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) { +- /* put pseudoheader back on for next time */ +- skb_push(skb, IPOIB_PSEUDO_LEN); ++ push_pseudo_header(skb, phdr->hwaddr); + __skb_queue_tail(&path->queue, skb); + } else { + ++dev->stats.tx_dropped; +@@ -1018,8 +1024,7 @@ static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev, + return; + } else if ((path->query || !path_rec_start(dev, path)) && + skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) { +- /* put pseudoheader back on for next time */ +- skb_push(skb, IPOIB_PSEUDO_LEN); ++ push_pseudo_header(skb, phdr->hwaddr); + __skb_queue_tail(&path->queue, skb); + } else { + ++dev->stats.tx_dropped; +@@ -1100,8 +1105,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev) + } + + if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) { +- /* put pseudoheader back on for next time */ +- skb_push(skb, sizeof(*phdr)); ++ push_pseudo_header(skb, phdr->hwaddr); + spin_lock_irqsave(&priv->lock, flags); + __skb_queue_tail(&neigh->queue, skb); + spin_unlock_irqrestore(&priv->lock, flags); +@@ -1133,7 +1137,6 @@ static int ipoib_hard_header(struct sk_buff *skb, + unsigned short type, + const void *daddr, const void *saddr, unsigned len) + { +- struct ipoib_pseudo_header *phdr; + struct ipoib_header *header; + + header = (struct ipoib_header *) skb_push(skb, sizeof *header); +@@ -1146,8 +1149,7 @@ static int ipoib_hard_header(struct sk_buff *skb, + * destination address into skb hard header so we can figure out where + * to send the packet later. + */ +- phdr = (struct ipoib_pseudo_header *) skb_push(skb, sizeof(*phdr)); +- memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN); ++ push_pseudo_header(skb, daddr); + + return IPOIB_HARD_LEN; + } +diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c +index e7dcf14a76e2..1eee8f7e75ca 100644 +--- a/drivers/infiniband/ulp/srp/ib_srp.c ++++ b/drivers/infiniband/ulp/srp/ib_srp.c +@@ -366,7 +366,6 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device, + struct srp_fr_desc *d; + struct ib_mr *mr; + int i, ret = -EINVAL; +- enum ib_mr_type mr_type; + + if (pool_size <= 0) + goto err; +@@ -380,13 +379,9 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device, + spin_lock_init(&pool->lock); + INIT_LIST_HEAD(&pool->free_list); + +- if (device->attrs.device_cap_flags & IB_DEVICE_SG_GAPS_REG) +- mr_type = IB_MR_TYPE_SG_GAPS; +- else +- mr_type = IB_MR_TYPE_MEM_REG; +- + for (i = 0, d = &pool->desc[0]; i < pool->size; i++, d++) { +- mr = ib_alloc_mr(pd, mr_type, max_page_list_len); ++ mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG, ++ max_page_list_len); + if (IS_ERR(mr)) { + ret = PTR_ERR(mr); + goto destroy_pool; +@@ -1877,17 +1872,24 @@ static void srp_process_rsp(struct srp_rdma_ch *ch, struct srp_rsp *rsp) + if (unlikely(rsp->tag & SRP_TAG_TSK_MGMT)) { + spin_lock_irqsave(&ch->lock, flags); + ch->req_lim += be32_to_cpu(rsp->req_lim_delta); ++ if (rsp->tag == ch->tsk_mgmt_tag) { ++ ch->tsk_mgmt_status = -1; ++ if (be32_to_cpu(rsp->resp_data_len) >= 4) ++ ch->tsk_mgmt_status = rsp->data[3]; ++ complete(&ch->tsk_mgmt_done); ++ } else { ++ shost_printk(KERN_ERR, target->scsi_host, ++ "Received tsk mgmt response too late for tag %#llx\n", ++ rsp->tag); ++ } + spin_unlock_irqrestore(&ch->lock, flags); +- +- ch->tsk_mgmt_status = -1; +- if (be32_to_cpu(rsp->resp_data_len) >= 4) +- ch->tsk_mgmt_status = rsp->data[3]; +- complete(&ch->tsk_mgmt_done); + } else { + scmnd = scsi_host_find_tag(target->scsi_host, rsp->tag); +- if (scmnd) { ++ if (scmnd && scmnd->host_scribble) { + req = (void *)scmnd->host_scribble; + scmnd = srp_claim_req(ch, req, NULL, scmnd); ++ } else { ++ scmnd = NULL; + } + if (!scmnd) { + shost_printk(KERN_ERR, target->scsi_host, +@@ -2519,19 +2521,18 @@ srp_change_queue_depth(struct scsi_device *sdev, int qdepth) + } + + static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag, u64 lun, +- u8 func) ++ u8 func, u8 *status) + { + struct srp_target_port *target = ch->target; + struct srp_rport *rport = target->rport; + struct ib_device *dev = target->srp_host->srp_dev->dev; + struct srp_iu *iu; + struct srp_tsk_mgmt *tsk_mgmt; ++ int res; + + if (!ch->connected || target->qp_in_error) + return -1; + +- init_completion(&ch->tsk_mgmt_done); +- + /* + * Lock the rport mutex to avoid that srp_create_ch_ib() is + * invoked while a task management function is being sent. +@@ -2554,10 +2555,16 @@ static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag, u64 lun, + + tsk_mgmt->opcode = SRP_TSK_MGMT; + int_to_scsilun(lun, &tsk_mgmt->lun); +- tsk_mgmt->tag = req_tag | SRP_TAG_TSK_MGMT; + tsk_mgmt->tsk_mgmt_func = func; + tsk_mgmt->task_tag = req_tag; + ++ spin_lock_irq(&ch->lock); ++ ch->tsk_mgmt_tag = (ch->tsk_mgmt_tag + 1) | SRP_TAG_TSK_MGMT; ++ tsk_mgmt->tag = ch->tsk_mgmt_tag; ++ spin_unlock_irq(&ch->lock); ++ ++ init_completion(&ch->tsk_mgmt_done); ++ + ib_dma_sync_single_for_device(dev, iu->dma, sizeof *tsk_mgmt, + DMA_TO_DEVICE); + if (srp_post_send(ch, iu, sizeof(*tsk_mgmt))) { +@@ -2566,13 +2573,15 @@ static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag, u64 lun, + + return -1; + } ++ res = wait_for_completion_timeout(&ch->tsk_mgmt_done, ++ msecs_to_jiffies(SRP_ABORT_TIMEOUT_MS)); ++ if (res > 0 && status) ++ *status = ch->tsk_mgmt_status; + mutex_unlock(&rport->mutex); + +- if (!wait_for_completion_timeout(&ch->tsk_mgmt_done, +- msecs_to_jiffies(SRP_ABORT_TIMEOUT_MS))) +- return -1; ++ WARN_ON_ONCE(res < 0); + +- return 0; ++ return res > 0 ? 0 : -1; + } + + static int srp_abort(struct scsi_cmnd *scmnd) +@@ -2598,7 +2607,7 @@ static int srp_abort(struct scsi_cmnd *scmnd) + shost_printk(KERN_ERR, target->scsi_host, + "Sending SRP abort for tag %#x\n", tag); + if (srp_send_tsk_mgmt(ch, tag, scmnd->device->lun, +- SRP_TSK_ABORT_TASK) == 0) ++ SRP_TSK_ABORT_TASK, NULL) == 0) + ret = SUCCESS; + else if (target->rport->state == SRP_RPORT_LOST) + ret = FAST_IO_FAIL; +@@ -2616,14 +2625,15 @@ static int srp_reset_device(struct scsi_cmnd *scmnd) + struct srp_target_port *target = host_to_target(scmnd->device->host); + struct srp_rdma_ch *ch; + int i; ++ u8 status; + + shost_printk(KERN_ERR, target->scsi_host, "SRP reset_device called\n"); + + ch = &target->ch[0]; + if (srp_send_tsk_mgmt(ch, SRP_TAG_NO_REQ, scmnd->device->lun, +- SRP_TSK_LUN_RESET)) ++ SRP_TSK_LUN_RESET, &status)) + return FAILED; +- if (ch->tsk_mgmt_status) ++ if (status) + return FAILED; + + for (i = 0; i < target->ch_count; i++) { +@@ -2652,9 +2662,8 @@ static int srp_slave_alloc(struct scsi_device *sdev) + struct Scsi_Host *shost = sdev->host; + struct srp_target_port *target = host_to_target(shost); + struct srp_device *srp_dev = target->srp_host->srp_dev; +- struct ib_device *ibdev = srp_dev->dev; + +- if (!(ibdev->attrs.device_cap_flags & IB_DEVICE_SG_GAPS_REG)) ++ if (true) + blk_queue_virt_boundary(sdev->request_queue, + ~srp_dev->mr_page_mask); + +diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h +index 21c69695f9d4..32ed40db3ca2 100644 +--- a/drivers/infiniband/ulp/srp/ib_srp.h ++++ b/drivers/infiniband/ulp/srp/ib_srp.h +@@ -163,6 +163,7 @@ struct srp_rdma_ch { + int max_ti_iu_len; + int comp_vector; + ++ u64 tsk_mgmt_tag; + struct completion tsk_mgmt_done; + u8 tsk_mgmt_status; + bool connected; +diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c +index b5ed3bd082b5..e9ebc4f31d16 100644 +--- a/drivers/memory/atmel-ebi.c ++++ b/drivers/memory/atmel-ebi.c +@@ -93,7 +93,7 @@ static void at91sam9_ebi_get_config(struct at91_ebi_dev *ebid, + struct at91_ebi_dev_config *conf) + { + struct at91sam9_smc_generic_fields *fields = &ebid->ebi->sam9; +- unsigned int clk_rate = clk_get_rate(ebid->ebi->clk); ++ unsigned int clk_period = NSEC_PER_SEC / clk_get_rate(ebid->ebi->clk); + struct at91sam9_ebi_dev_config *config = &conf->sam9; + struct at91sam9_smc_timings *timings = &config->timings; + unsigned int val; +@@ -102,43 +102,43 @@ static void at91sam9_ebi_get_config(struct at91_ebi_dev *ebid, + config->mode = val & ~AT91_SMC_TDF; + + val = (val & AT91_SMC_TDF) >> 16; +- timings->tdf_ns = clk_rate * val; ++ timings->tdf_ns = clk_period * val; + + regmap_fields_read(fields->setup, conf->cs, &val); + timings->ncs_rd_setup_ns = (val >> 24) & 0x1f; + timings->ncs_rd_setup_ns += ((val >> 29) & 0x1) * 128; +- timings->ncs_rd_setup_ns *= clk_rate; ++ timings->ncs_rd_setup_ns *= clk_period; + timings->nrd_setup_ns = (val >> 16) & 0x1f; + timings->nrd_setup_ns += ((val >> 21) & 0x1) * 128; +- timings->nrd_setup_ns *= clk_rate; ++ timings->nrd_setup_ns *= clk_period; + timings->ncs_wr_setup_ns = (val >> 8) & 0x1f; + timings->ncs_wr_setup_ns += ((val >> 13) & 0x1) * 128; +- timings->ncs_wr_setup_ns *= clk_rate; ++ timings->ncs_wr_setup_ns *= clk_period; + timings->nwe_setup_ns = val & 0x1f; + timings->nwe_setup_ns += ((val >> 5) & 0x1) * 128; +- timings->nwe_setup_ns *= clk_rate; ++ timings->nwe_setup_ns *= clk_period; + + regmap_fields_read(fields->pulse, conf->cs, &val); + timings->ncs_rd_pulse_ns = (val >> 24) & 0x3f; + timings->ncs_rd_pulse_ns += ((val >> 30) & 0x1) * 256; +- timings->ncs_rd_pulse_ns *= clk_rate; ++ timings->ncs_rd_pulse_ns *= clk_period; + timings->nrd_pulse_ns = (val >> 16) & 0x3f; + timings->nrd_pulse_ns += ((val >> 22) & 0x1) * 256; +- timings->nrd_pulse_ns *= clk_rate; ++ timings->nrd_pulse_ns *= clk_period; + timings->ncs_wr_pulse_ns = (val >> 8) & 0x3f; + timings->ncs_wr_pulse_ns += ((val >> 14) & 0x1) * 256; +- timings->ncs_wr_pulse_ns *= clk_rate; ++ timings->ncs_wr_pulse_ns *= clk_period; + timings->nwe_pulse_ns = val & 0x3f; + timings->nwe_pulse_ns += ((val >> 6) & 0x1) * 256; +- timings->nwe_pulse_ns *= clk_rate; ++ timings->nwe_pulse_ns *= clk_period; + + regmap_fields_read(fields->cycle, conf->cs, &val); + timings->nrd_cycle_ns = (val >> 16) & 0x7f; + timings->nrd_cycle_ns += ((val >> 23) & 0x3) * 256; +- timings->nrd_cycle_ns *= clk_rate; ++ timings->nrd_cycle_ns *= clk_period; + timings->nwe_cycle_ns = val & 0x7f; + timings->nwe_cycle_ns += ((val >> 7) & 0x3) * 256; +- timings->nwe_cycle_ns *= clk_rate; ++ timings->nwe_cycle_ns *= clk_period; + } + + static int at91_xlate_timing(struct device_node *np, const char *prop, +@@ -334,6 +334,7 @@ static int at91sam9_ebi_apply_config(struct at91_ebi_dev *ebid, + struct at91_ebi_dev_config *conf) + { + unsigned int clk_rate = clk_get_rate(ebid->ebi->clk); ++ unsigned int clk_period = NSEC_PER_SEC / clk_rate; + struct at91sam9_ebi_dev_config *config = &conf->sam9; + struct at91sam9_smc_timings *timings = &config->timings; + struct at91sam9_smc_generic_fields *fields = &ebid->ebi->sam9; +@@ -376,7 +377,7 @@ static int at91sam9_ebi_apply_config(struct at91_ebi_dev *ebid, + val |= AT91SAM9_SMC_NWECYCLE(coded_val); + regmap_fields_write(fields->cycle, conf->cs, val); + +- val = DIV_ROUND_UP(timings->tdf_ns, clk_rate); ++ val = DIV_ROUND_UP(timings->tdf_ns, clk_period); + if (val > AT91_SMC_TDF_MAX) + val = AT91_SMC_TDF_MAX; + regmap_fields_write(fields->mode, conf->cs, +diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h +index a144073593fa..52ee3da85366 100644 +--- a/drivers/misc/cxl/cxl.h ++++ b/drivers/misc/cxl/cxl.h +@@ -419,6 +419,9 @@ struct cxl_afu { + struct mutex contexts_lock; + spinlock_t afu_cntl_lock; + ++ /* -1: AFU deconfigured/locked, >= 0: number of readers */ ++ atomic_t configured_state; ++ + /* AFU error buffer fields and bin attribute for sysfs */ + u64 eb_len, eb_offset; + struct bin_attribute attr_eb; +diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c +index 62e0dfb5f15b..cc1706a92ace 100644 +--- a/drivers/misc/cxl/main.c ++++ b/drivers/misc/cxl/main.c +@@ -268,7 +268,7 @@ struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice) + idr_init(&afu->contexts_idr); + mutex_init(&afu->contexts_lock); + spin_lock_init(&afu->afu_cntl_lock); +- ++ atomic_set(&afu->configured_state, -1); + afu->prefault_mode = CXL_PREFAULT_NONE; + afu->irqs_max = afu->adapter->user_irqs; + +diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c +index e96be9ca4e60..dd99b06e121a 100644 +--- a/drivers/misc/cxl/pci.c ++++ b/drivers/misc/cxl/pci.c +@@ -1129,6 +1129,7 @@ static int pci_configure_afu(struct cxl_afu *afu, struct cxl *adapter, struct pc + if ((rc = cxl_native_register_psl_irq(afu))) + goto err2; + ++ atomic_set(&afu->configured_state, 0); + return 0; + + err2: +@@ -1141,6 +1142,14 @@ static int pci_configure_afu(struct cxl_afu *afu, struct cxl *adapter, struct pc + + static void pci_deconfigure_afu(struct cxl_afu *afu) + { ++ /* ++ * It's okay to deconfigure when AFU is already locked, otherwise wait ++ * until there are no readers ++ */ ++ if (atomic_read(&afu->configured_state) != -1) { ++ while (atomic_cmpxchg(&afu->configured_state, 0, -1) != -1) ++ schedule(); ++ } + cxl_native_release_psl_irq(afu); + if (afu->adapter->native->sl_ops->release_serr_irq) + afu->adapter->native->sl_ops->release_serr_irq(afu); +diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c +index 3519acebfdab..512a4897dbf6 100644 +--- a/drivers/misc/cxl/vphb.c ++++ b/drivers/misc/cxl/vphb.c +@@ -76,23 +76,32 @@ static int cxl_pcie_cfg_record(u8 bus, u8 devfn) + return (bus << 8) + devfn; + } + +-static int cxl_pcie_config_info(struct pci_bus *bus, unsigned int devfn, +- struct cxl_afu **_afu, int *_record) ++static inline struct cxl_afu *pci_bus_to_afu(struct pci_bus *bus) + { +- struct pci_controller *phb; +- struct cxl_afu *afu; +- int record; ++ struct pci_controller *phb = bus ? pci_bus_to_host(bus) : NULL; + +- phb = pci_bus_to_host(bus); +- if (phb == NULL) +- return PCIBIOS_DEVICE_NOT_FOUND; ++ return phb ? phb->private_data : NULL; ++} ++ ++static void cxl_afu_configured_put(struct cxl_afu *afu) ++{ ++ atomic_dec_if_positive(&afu->configured_state); ++} ++ ++static bool cxl_afu_configured_get(struct cxl_afu *afu) ++{ ++ return atomic_inc_unless_negative(&afu->configured_state); ++} ++ ++static inline int cxl_pcie_config_info(struct pci_bus *bus, unsigned int devfn, ++ struct cxl_afu *afu, int *_record) ++{ ++ int record; + +- afu = (struct cxl_afu *)phb->private_data; + record = cxl_pcie_cfg_record(bus->number, devfn); + if (record > afu->crs_num) + return PCIBIOS_DEVICE_NOT_FOUND; + +- *_afu = afu; + *_record = record; + return 0; + } +@@ -106,9 +115,14 @@ static int cxl_pcie_read_config(struct pci_bus *bus, unsigned int devfn, + u16 val16; + u32 val32; + +- rc = cxl_pcie_config_info(bus, devfn, &afu, &record); ++ afu = pci_bus_to_afu(bus); ++ /* Grab a reader lock on afu. */ ++ if (afu == NULL || !cxl_afu_configured_get(afu)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ rc = cxl_pcie_config_info(bus, devfn, afu, &record); + if (rc) +- return rc; ++ goto out; + + switch (len) { + case 1: +@@ -127,10 +141,9 @@ static int cxl_pcie_read_config(struct pci_bus *bus, unsigned int devfn, + WARN_ON(1); + } + +- if (rc) +- return PCIBIOS_DEVICE_NOT_FOUND; +- +- return PCIBIOS_SUCCESSFUL; ++out: ++ cxl_afu_configured_put(afu); ++ return rc ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; + } + + static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn, +@@ -139,9 +152,14 @@ static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn, + int rc, record; + struct cxl_afu *afu; + +- rc = cxl_pcie_config_info(bus, devfn, &afu, &record); ++ afu = pci_bus_to_afu(bus); ++ /* Grab a reader lock on afu. */ ++ if (afu == NULL || !cxl_afu_configured_get(afu)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ rc = cxl_pcie_config_info(bus, devfn, afu, &record); + if (rc) +- return rc; ++ goto out; + + switch (len) { + case 1: +@@ -157,10 +175,9 @@ static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn, + WARN_ON(1); + } + +- if (rc) +- return PCIBIOS_SET_FAILED; +- +- return PCIBIOS_SUCCESSFUL; ++out: ++ cxl_afu_configured_put(afu); ++ return rc ? PCIBIOS_SET_FAILED : PCIBIOS_SUCCESSFUL; + } + + static struct pci_ops cxl_pcie_pci_ops = +diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c +index 930c8165f2a8..0a4e81a253fb 100644 +--- a/drivers/net/ethernet/marvell/mvpp2.c ++++ b/drivers/net/ethernet/marvell/mvpp2.c +@@ -991,7 +991,7 @@ static void mvpp2_txq_inc_put(struct mvpp2_txq_pcpu *txq_pcpu, + txq_pcpu->buffs + txq_pcpu->txq_put_index; + tx_buf->skb = skb; + tx_buf->size = tx_desc->data_size; +- tx_buf->phys = tx_desc->buf_phys_addr; ++ tx_buf->phys = tx_desc->buf_phys_addr + tx_desc->packet_offset; + txq_pcpu->txq_put_index++; + if (txq_pcpu->txq_put_index == txq_pcpu->size) + txq_pcpu->txq_put_index = 0; +diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +index b892dac70f4b..2458e6e05276 100644 +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +@@ -1660,7 +1660,7 @@ static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq) + pfirst->len, pfirst->next, + pfirst->prev); + skb_unlink(pfirst, &bus->glom); +- if (brcmf_sdio_fromevntchan(pfirst->data)) ++ if (brcmf_sdio_fromevntchan(&dptr[SDPCM_HWHDR_LEN])) + brcmf_rx_event(bus->sdiodev->dev, pfirst); + else + brcmf_rx_frame(bus->sdiodev->dev, pfirst, +diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c +index aefca644219b..a38ae34b74e4 100644 +--- a/drivers/nvdimm/namespace_devs.c ++++ b/drivers/nvdimm/namespace_devs.c +@@ -1700,6 +1700,7 @@ static int select_pmem_id(struct nd_region *nd_region, u8 *pmem_id) + struct device *create_namespace_pmem(struct nd_region *nd_region, + struct nd_namespace_label *nd_label) + { ++ u64 altcookie = nd_region_interleave_set_altcookie(nd_region); + u64 cookie = nd_region_interleave_set_cookie(nd_region); + struct nd_label_ent *label_ent; + struct nd_namespace_pmem *nspm; +@@ -1718,7 +1719,11 @@ struct device *create_namespace_pmem(struct nd_region *nd_region, + if (__le64_to_cpu(nd_label->isetcookie) != cookie) { + dev_dbg(&nd_region->dev, "invalid cookie in label: %pUb\n", + nd_label->uuid); +- return ERR_PTR(-EAGAIN); ++ if (__le64_to_cpu(nd_label->isetcookie) != altcookie) ++ return ERR_PTR(-EAGAIN); ++ ++ dev_dbg(&nd_region->dev, "valid altcookie in label: %pUb\n", ++ nd_label->uuid); + } + + nspm = kzalloc(sizeof(*nspm), GFP_KERNEL); +@@ -1733,9 +1738,14 @@ struct device *create_namespace_pmem(struct nd_region *nd_region, + res->name = dev_name(&nd_region->dev); + res->flags = IORESOURCE_MEM; + +- for (i = 0; i < nd_region->ndr_mappings; i++) +- if (!has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i)) +- break; ++ for (i = 0; i < nd_region->ndr_mappings; i++) { ++ if (has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i)) ++ continue; ++ if (has_uuid_at_pos(nd_region, nd_label->uuid, altcookie, i)) ++ continue; ++ break; ++ } ++ + if (i < nd_region->ndr_mappings) { + struct nvdimm_drvdata *ndd = to_ndd(&nd_region->mapping[i]); + +diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h +index d3b2fca8deec..d869236b474f 100644 +--- a/drivers/nvdimm/nd.h ++++ b/drivers/nvdimm/nd.h +@@ -327,6 +327,7 @@ struct nd_region *to_nd_region(struct device *dev); + int nd_region_to_nstype(struct nd_region *nd_region); + int nd_region_register_namespaces(struct nd_region *nd_region, int *err); + u64 nd_region_interleave_set_cookie(struct nd_region *nd_region); ++u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region); + void nvdimm_bus_lock(struct device *dev); + void nvdimm_bus_unlock(struct device *dev); + bool is_nvdimm_bus_locked(struct device *dev); +diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c +index 6af5e629140c..9cf6f1a88fce 100644 +--- a/drivers/nvdimm/region_devs.c ++++ b/drivers/nvdimm/region_devs.c +@@ -505,6 +505,15 @@ u64 nd_region_interleave_set_cookie(struct nd_region *nd_region) + return 0; + } + ++u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region) ++{ ++ struct nd_interleave_set *nd_set = nd_region->nd_set; ++ ++ if (nd_set) ++ return nd_set->altcookie; ++ return 0; ++} ++ + void nd_mapping_free_labels(struct nd_mapping *nd_mapping) + { + struct nd_label_ent *label_ent, *e; +diff --git a/drivers/pci/hotplug/pnv_php.c b/drivers/pci/hotplug/pnv_php.c +index acb2be0c8c2c..e96973b95e7a 100644 +--- a/drivers/pci/hotplug/pnv_php.c ++++ b/drivers/pci/hotplug/pnv_php.c +@@ -82,7 +82,7 @@ static void pnv_php_free_slot(struct kref *kref) + static inline void pnv_php_put_slot(struct pnv_php_slot *php_slot) + { + +- if (WARN_ON(!php_slot)) ++ if (!php_slot) + return; + + kref_put(&php_slot->kref, pnv_php_free_slot); +@@ -436,9 +436,21 @@ static int pnv_php_enable(struct pnv_php_slot *php_slot, bool rescan) + if (ret) + return ret; + +- /* Proceed if there have nothing behind the slot */ +- if (presence == OPAL_PCI_SLOT_EMPTY) ++ /* ++ * Proceed if there have nothing behind the slot. However, ++ * we should leave the slot in registered state at the ++ * beginning. Otherwise, the PCI devices inserted afterwards ++ * won't be probed and populated. ++ */ ++ if (presence == OPAL_PCI_SLOT_EMPTY) { ++ if (!php_slot->power_state_check) { ++ php_slot->power_state_check = true; ++ ++ return 0; ++ } ++ + goto scan; ++ } + + /* + * If the power supply to the slot is off, we can't detect +@@ -713,8 +725,12 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data) + added = !!(lsts & PCI_EXP_LNKSTA_DLLLA); + } else if (sts & PCI_EXP_SLTSTA_PDC) { + ret = pnv_pci_get_presence_state(php_slot->id, &presence); +- if (!ret) ++ if (ret) { ++ dev_warn(&pdev->dev, "PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n", ++ php_slot->name, ret, sts); + return IRQ_HANDLED; ++ } ++ + added = !!(presence == OPAL_PCI_SLOT_PRESENT); + } else { + return IRQ_NONE; +@@ -799,6 +815,14 @@ static void pnv_php_enable_irq(struct pnv_php_slot *php_slot) + struct pci_dev *pdev = php_slot->pdev; + int irq, ret; + ++ /* ++ * The MSI/MSIx interrupt might have been occupied by other ++ * drivers. Don't populate the surprise hotplug capability ++ * in that case. ++ */ ++ if (pci_dev_msi_enabled(pdev)) ++ return; ++ + ret = pci_enable_device(pdev); + if (ret) { + dev_warn(&pdev->dev, "Error %d enabling device\n", ret); +diff --git a/drivers/pwm/pwm-pca9685.c b/drivers/pwm/pwm-pca9685.c +index 117fccf7934a..01a6a83f625d 100644 +--- a/drivers/pwm/pwm-pca9685.c ++++ b/drivers/pwm/pwm-pca9685.c +@@ -65,7 +65,6 @@ + #define PCA9685_MAXCHAN 0x10 + + #define LED_FULL (1 << 4) +-#define MODE1_RESTART (1 << 7) + #define MODE1_SLEEP (1 << 4) + #define MODE2_INVRT (1 << 4) + #define MODE2_OUTDRV (1 << 2) +@@ -117,16 +116,6 @@ static int pca9685_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, + udelay(500); + + pca->period_ns = period_ns; +- +- /* +- * If the duty cycle did not change, restart PWM with +- * the same duty cycle to period ratio and return. +- */ +- if (duty_ns == pca->duty_ns) { +- regmap_update_bits(pca->regmap, PCA9685_MODE1, +- MODE1_RESTART, 0x1); +- return 0; +- } + } else { + dev_err(chip->dev, + "prescaler not set: period out of bounds!\n"); +diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c +index 9d66b4fb174b..415d10a67b7a 100644 +--- a/drivers/s390/block/dcssblk.c ++++ b/drivers/s390/block/dcssblk.c +@@ -892,7 +892,7 @@ dcssblk_direct_access (struct block_device *bdev, sector_t secnum, + dev_info = bdev->bd_disk->private_data; + if (!dev_info) + return -ENODEV; +- dev_sz = dev_info->end - dev_info->start; ++ dev_sz = dev_info->end - dev_info->start + 1; + offset = secnum * 512; + *kaddr = (void *) dev_info->start + offset; + *pfn = __pfn_to_pfn_t(PFN_DOWN(dev_info->start + offset), PFN_DEV); +diff --git a/drivers/s390/cio/ioasm.c b/drivers/s390/cio/ioasm.c +index 8225da619014..4182f60124da 100644 +--- a/drivers/s390/cio/ioasm.c ++++ b/drivers/s390/cio/ioasm.c +@@ -165,13 +165,15 @@ int tpi(struct tpi_info *addr) + int chsc(void *chsc_area) + { + typedef struct { char _[4096]; } addr_type; +- int cc; ++ int cc = -EIO; + + asm volatile( + " .insn rre,0xb25f0000,%2,0\n" +- " ipm %0\n" ++ "0: ipm %0\n" + " srl %0,28\n" +- : "=d" (cc), "=m" (*(addr_type *) chsc_area) ++ "1:\n" ++ EX_TABLE(0b, 1b) ++ : "+d" (cc), "=m" (*(addr_type *) chsc_area) + : "d" (chsc_area), "m" (*(addr_type *) chsc_area) + : "cc"); + trace_s390_cio_chsc(chsc_area, cc); +diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c +index 5d06253c2a7a..30e9fbbff051 100644 +--- a/drivers/s390/cio/qdio_thinint.c ++++ b/drivers/s390/cio/qdio_thinint.c +@@ -147,11 +147,11 @@ static inline void tiqdio_call_inq_handlers(struct qdio_irq *irq) + struct qdio_q *q; + int i; + +- for_each_input_queue(irq, q, i) { +- if (!references_shared_dsci(irq) && +- has_multiple_inq_on_dsci(irq)) +- xchg(q->irq_ptr->dsci, 0); ++ if (!references_shared_dsci(irq) && ++ has_multiple_inq_on_dsci(irq)) ++ xchg(irq->dsci, 0); + ++ for_each_input_queue(irq, q, i) { + if (q->u.in.queue_start_poll) { + /* skip if polling is enabled or already in work */ + if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED, +diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c +index ea9617c7b403..cc38a3509f78 100644 +--- a/drivers/target/target_core_device.c ++++ b/drivers/target/target_core_device.c +@@ -77,12 +77,16 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun) + &deve->read_bytes); + + se_lun = rcu_dereference(deve->se_lun); ++ ++ if (!percpu_ref_tryget_live(&se_lun->lun_ref)) { ++ se_lun = NULL; ++ goto out_unlock; ++ } ++ + se_cmd->se_lun = rcu_dereference(deve->se_lun); + se_cmd->pr_res_key = deve->pr_res_key; + se_cmd->orig_fe_lun = unpacked_lun; + se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; +- +- percpu_ref_get(&se_lun->lun_ref); + se_cmd->lun_ref_active = true; + + if ((se_cmd->data_direction == DMA_TO_DEVICE) && +@@ -96,6 +100,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun) + goto ref_dev; + } + } ++out_unlock: + rcu_read_unlock(); + + if (!se_lun) { +@@ -815,6 +820,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) + xcopy_lun = &dev->xcopy_lun; + rcu_assign_pointer(xcopy_lun->lun_se_dev, dev); + init_completion(&xcopy_lun->lun_ref_comp); ++ init_completion(&xcopy_lun->lun_shutdown_comp); + INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); + INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); + mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); +diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c +index d99752c6cd60..2744251178ad 100644 +--- a/drivers/target/target_core_tpg.c ++++ b/drivers/target/target_core_tpg.c +@@ -445,7 +445,7 @@ static void core_tpg_lun_ref_release(struct percpu_ref *ref) + { + struct se_lun *lun = container_of(ref, struct se_lun, lun_ref); + +- complete(&lun->lun_ref_comp); ++ complete(&lun->lun_shutdown_comp); + } + + int core_tpg_register( +@@ -571,6 +571,7 @@ struct se_lun *core_tpg_alloc_lun( + lun->lun_link_magic = SE_LUN_LINK_MAGIC; + atomic_set(&lun->lun_acl_count, 0); + init_completion(&lun->lun_ref_comp); ++ init_completion(&lun->lun_shutdown_comp); + INIT_LIST_HEAD(&lun->lun_deve_list); + INIT_LIST_HEAD(&lun->lun_dev_link); + atomic_set(&lun->lun_tg_pt_secondary_offline, 0); +diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c +index 767d1eb6e035..cae4dea6464e 100644 +--- a/drivers/target/target_core_transport.c ++++ b/drivers/target/target_core_transport.c +@@ -2702,10 +2702,39 @@ void target_wait_for_sess_cmds(struct se_session *se_sess) + } + EXPORT_SYMBOL(target_wait_for_sess_cmds); + ++static void target_lun_confirm(struct percpu_ref *ref) ++{ ++ struct se_lun *lun = container_of(ref, struct se_lun, lun_ref); ++ ++ complete(&lun->lun_ref_comp); ++} ++ + void transport_clear_lun_ref(struct se_lun *lun) + { +- percpu_ref_kill(&lun->lun_ref); ++ /* ++ * Mark the percpu-ref as DEAD, switch to atomic_t mode, drop ++ * the initial reference and schedule confirm kill to be ++ * executed after one full RCU grace period has completed. ++ */ ++ percpu_ref_kill_and_confirm(&lun->lun_ref, target_lun_confirm); ++ /* ++ * The first completion waits for percpu_ref_switch_to_atomic_rcu() ++ * to call target_lun_confirm after lun->lun_ref has been marked ++ * as __PERCPU_REF_DEAD on all CPUs, and switches to atomic_t ++ * mode so that percpu_ref_tryget_live() lookup of lun->lun_ref ++ * fails for all new incoming I/O. ++ */ + wait_for_completion(&lun->lun_ref_comp); ++ /* ++ * The second completion waits for percpu_ref_put_many() to ++ * invoke ->release() after lun->lun_ref has switched to ++ * atomic_t mode, and lun->lun_ref.count has reached zero. ++ * ++ * At this point all target-core lun->lun_ref references have ++ * been dropped via transport_lun_remove_cmd(), and it's safe ++ * to proceed with the remaining LUN shutdown. ++ */ ++ wait_for_completion(&lun->lun_shutdown_comp); + } + + static bool +diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c +index a7fa016f31eb..6d1e2f746ab4 100644 +--- a/drivers/tty/n_hdlc.c ++++ b/drivers/tty/n_hdlc.c +@@ -114,7 +114,7 @@ + #define DEFAULT_TX_BUF_COUNT 3 + + struct n_hdlc_buf { +- struct n_hdlc_buf *link; ++ struct list_head list_item; + int count; + char buf[1]; + }; +@@ -122,8 +122,7 @@ struct n_hdlc_buf { + #define N_HDLC_BUF_SIZE (sizeof(struct n_hdlc_buf) + maxframe) + + struct n_hdlc_buf_list { +- struct n_hdlc_buf *head; +- struct n_hdlc_buf *tail; ++ struct list_head list; + int count; + spinlock_t spinlock; + }; +@@ -136,7 +135,6 @@ struct n_hdlc_buf_list { + * @backup_tty - TTY to use if tty gets closed + * @tbusy - reentrancy flag for tx wakeup code + * @woke_up - FIXME: describe this field +- * @tbuf - currently transmitting tx buffer + * @tx_buf_list - list of pending transmit frame buffers + * @rx_buf_list - list of received frame buffers + * @tx_free_buf_list - list unused transmit frame buffers +@@ -149,7 +147,6 @@ struct n_hdlc { + struct tty_struct *backup_tty; + int tbusy; + int woke_up; +- struct n_hdlc_buf *tbuf; + struct n_hdlc_buf_list tx_buf_list; + struct n_hdlc_buf_list rx_buf_list; + struct n_hdlc_buf_list tx_free_buf_list; +@@ -159,6 +156,8 @@ struct n_hdlc { + /* + * HDLC buffer list manipulation functions + */ ++static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list, ++ struct n_hdlc_buf *buf); + static void n_hdlc_buf_put(struct n_hdlc_buf_list *list, + struct n_hdlc_buf *buf); + static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *list); +@@ -208,16 +207,9 @@ static void flush_tx_queue(struct tty_struct *tty) + { + struct n_hdlc *n_hdlc = tty2n_hdlc(tty); + struct n_hdlc_buf *buf; +- unsigned long flags; + + while ((buf = n_hdlc_buf_get(&n_hdlc->tx_buf_list))) + n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, buf); +- spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags); +- if (n_hdlc->tbuf) { +- n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, n_hdlc->tbuf); +- n_hdlc->tbuf = NULL; +- } +- spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags); + } + + static struct tty_ldisc_ops n_hdlc_ldisc = { +@@ -283,7 +275,6 @@ static void n_hdlc_release(struct n_hdlc *n_hdlc) + } else + break; + } +- kfree(n_hdlc->tbuf); + kfree(n_hdlc); + + } /* end of n_hdlc_release() */ +@@ -402,13 +393,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty) + n_hdlc->woke_up = 0; + spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags); + +- /* get current transmit buffer or get new transmit */ +- /* buffer from list of pending transmit buffers */ +- +- tbuf = n_hdlc->tbuf; +- if (!tbuf) +- tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list); +- ++ tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list); + while (tbuf) { + if (debuglevel >= DEBUG_LEVEL_INFO) + printk("%s(%d)sending frame %p, count=%d\n", +@@ -420,7 +405,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty) + + /* rollback was possible and has been done */ + if (actual == -ERESTARTSYS) { +- n_hdlc->tbuf = tbuf; ++ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf); + break; + } + /* if transmit error, throw frame away by */ +@@ -435,10 +420,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty) + + /* free current transmit buffer */ + n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, tbuf); +- +- /* this tx buffer is done */ +- n_hdlc->tbuf = NULL; +- ++ + /* wait up sleeping writers */ + wake_up_interruptible(&tty->write_wait); + +@@ -448,10 +430,12 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty) + if (debuglevel >= DEBUG_LEVEL_INFO) + printk("%s(%d)frame %p pending\n", + __FILE__,__LINE__,tbuf); +- +- /* buffer not accepted by driver */ +- /* set this buffer as pending buffer */ +- n_hdlc->tbuf = tbuf; ++ ++ /* ++ * the buffer was not accepted by driver, ++ * return it back into tx queue ++ */ ++ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf); + break; + } + } +@@ -749,7 +733,8 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file, + int error = 0; + int count; + unsigned long flags; +- ++ struct n_hdlc_buf *buf = NULL; ++ + if (debuglevel >= DEBUG_LEVEL_INFO) + printk("%s(%d)n_hdlc_tty_ioctl() called %d\n", + __FILE__,__LINE__,cmd); +@@ -763,8 +748,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file, + /* report count of read data available */ + /* in next available frame (if any) */ + spin_lock_irqsave(&n_hdlc->rx_buf_list.spinlock,flags); +- if (n_hdlc->rx_buf_list.head) +- count = n_hdlc->rx_buf_list.head->count; ++ buf = list_first_entry_or_null(&n_hdlc->rx_buf_list.list, ++ struct n_hdlc_buf, list_item); ++ if (buf) ++ count = buf->count; + else + count = 0; + spin_unlock_irqrestore(&n_hdlc->rx_buf_list.spinlock,flags); +@@ -776,8 +763,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file, + count = tty_chars_in_buffer(tty); + /* add size of next output frame in queue */ + spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock,flags); +- if (n_hdlc->tx_buf_list.head) +- count += n_hdlc->tx_buf_list.head->count; ++ buf = list_first_entry_or_null(&n_hdlc->tx_buf_list.list, ++ struct n_hdlc_buf, list_item); ++ if (buf) ++ count += buf->count; + spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock,flags); + error = put_user(count, (int __user *)arg); + break; +@@ -825,14 +814,14 @@ static unsigned int n_hdlc_tty_poll(struct tty_struct *tty, struct file *filp, + poll_wait(filp, &tty->write_wait, wait); + + /* set bits for operations that won't block */ +- if (n_hdlc->rx_buf_list.head) ++ if (!list_empty(&n_hdlc->rx_buf_list.list)) + mask |= POLLIN | POLLRDNORM; /* readable */ + if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) + mask |= POLLHUP; + if (tty_hung_up_p(filp)) + mask |= POLLHUP; + if (!tty_is_writelocked(tty) && +- n_hdlc->tx_free_buf_list.head) ++ !list_empty(&n_hdlc->tx_free_buf_list.list)) + mask |= POLLOUT | POLLWRNORM; /* writable */ + } + return mask; +@@ -856,7 +845,12 @@ static struct n_hdlc *n_hdlc_alloc(void) + spin_lock_init(&n_hdlc->tx_free_buf_list.spinlock); + spin_lock_init(&n_hdlc->rx_buf_list.spinlock); + spin_lock_init(&n_hdlc->tx_buf_list.spinlock); +- ++ ++ INIT_LIST_HEAD(&n_hdlc->rx_free_buf_list.list); ++ INIT_LIST_HEAD(&n_hdlc->tx_free_buf_list.list); ++ INIT_LIST_HEAD(&n_hdlc->rx_buf_list.list); ++ INIT_LIST_HEAD(&n_hdlc->tx_buf_list.list); ++ + /* allocate free rx buffer list */ + for(i=0;i<DEFAULT_RX_BUF_COUNT;i++) { + buf = kmalloc(N_HDLC_BUF_SIZE, GFP_KERNEL); +@@ -884,53 +878,65 @@ static struct n_hdlc *n_hdlc_alloc(void) + } /* end of n_hdlc_alloc() */ + + /** ++ * n_hdlc_buf_return - put the HDLC buffer after the head of the specified list ++ * @buf_list - pointer to the buffer list ++ * @buf - pointer to the buffer ++ */ ++static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list, ++ struct n_hdlc_buf *buf) ++{ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&buf_list->spinlock, flags); ++ ++ list_add(&buf->list_item, &buf_list->list); ++ buf_list->count++; ++ ++ spin_unlock_irqrestore(&buf_list->spinlock, flags); ++} ++ ++/** + * n_hdlc_buf_put - add specified HDLC buffer to tail of specified list +- * @list - pointer to buffer list ++ * @buf_list - pointer to buffer list + * @buf - pointer to buffer + */ +-static void n_hdlc_buf_put(struct n_hdlc_buf_list *list, ++static void n_hdlc_buf_put(struct n_hdlc_buf_list *buf_list, + struct n_hdlc_buf *buf) + { + unsigned long flags; +- spin_lock_irqsave(&list->spinlock,flags); +- +- buf->link=NULL; +- if (list->tail) +- list->tail->link = buf; +- else +- list->head = buf; +- list->tail = buf; +- (list->count)++; +- +- spin_unlock_irqrestore(&list->spinlock,flags); +- ++ ++ spin_lock_irqsave(&buf_list->spinlock, flags); ++ ++ list_add_tail(&buf->list_item, &buf_list->list); ++ buf_list->count++; ++ ++ spin_unlock_irqrestore(&buf_list->spinlock, flags); + } /* end of n_hdlc_buf_put() */ + + /** + * n_hdlc_buf_get - remove and return an HDLC buffer from list +- * @list - pointer to HDLC buffer list ++ * @buf_list - pointer to HDLC buffer list + * + * Remove and return an HDLC buffer from the head of the specified HDLC buffer + * list. + * Returns a pointer to HDLC buffer if available, otherwise %NULL. + */ +-static struct n_hdlc_buf* n_hdlc_buf_get(struct n_hdlc_buf_list *list) ++static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *buf_list) + { + unsigned long flags; + struct n_hdlc_buf *buf; +- spin_lock_irqsave(&list->spinlock,flags); +- +- buf = list->head; ++ ++ spin_lock_irqsave(&buf_list->spinlock, flags); ++ ++ buf = list_first_entry_or_null(&buf_list->list, ++ struct n_hdlc_buf, list_item); + if (buf) { +- list->head = buf->link; +- (list->count)--; ++ list_del(&buf->list_item); ++ buf_list->count--; + } +- if (!list->head) +- list->tail = NULL; +- +- spin_unlock_irqrestore(&list->spinlock,flags); ++ ++ spin_unlock_irqrestore(&buf_list->spinlock, flags); + return buf; +- + } /* end of n_hdlc_buf_get() */ + + static char hdlc_banner[] __initdata = +diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c +index b98c1578f45a..4d09bd495a88 100644 +--- a/drivers/tty/serial/8250/8250_pci.c ++++ b/drivers/tty/serial/8250/8250_pci.c +@@ -2688,6 +2688,8 @@ enum pci_board_num_t { + pbn_b0_4_1152000_200, + pbn_b0_8_1152000_200, + ++ pbn_b0_4_1250000, ++ + pbn_b0_2_1843200, + pbn_b0_4_1843200, + +@@ -2919,6 +2921,13 @@ static struct pciserial_board pci_boards[] = { + .uart_offset = 0x200, + }, + ++ [pbn_b0_4_1250000] = { ++ .flags = FL_BASE0, ++ .num_ports = 4, ++ .base_baud = 1250000, ++ .uart_offset = 8, ++ }, ++ + [pbn_b0_2_1843200] = { + .flags = FL_BASE0, + .num_ports = 2, +@@ -5549,6 +5558,10 @@ static struct pci_device_id serial_pci_tbl[] = { + { PCI_DEVICE(0x1c29, 0x1108), .driver_data = pbn_fintek_8 }, + { PCI_DEVICE(0x1c29, 0x1112), .driver_data = pbn_fintek_12 }, + ++ /* MKS Tenta SCOM-080x serial cards */ ++ { PCI_DEVICE(0x1601, 0x0800), .driver_data = pbn_b0_4_1250000 }, ++ { PCI_DEVICE(0x1601, 0xa801), .driver_data = pbn_b0_4_1250000 }, ++ + /* + * These entries match devices with class COMMUNICATION_SERIAL, + * COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL +diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c +index 81dd075356b9..d4fb0afc0097 100644 +--- a/fs/afs/mntpt.c ++++ b/fs/afs/mntpt.c +@@ -202,7 +202,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt) + + /* try and do the mount */ + _debug("--- attempting mount %s -o %s ---", devname, options); +- mnt = vfs_kern_mount(&afs_fs_type, 0, devname, options); ++ mnt = vfs_submount(mntpt, &afs_fs_type, devname, options); + _debug("--- mount result %p ---", mnt); + + free_page((unsigned long) devname); +diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c +index e44271dfceb6..5db6c8d745ea 100644 +--- a/fs/autofs4/waitq.c ++++ b/fs/autofs4/waitq.c +@@ -431,8 +431,8 @@ int autofs4_wait(struct autofs_sb_info *sbi, + memcpy(&wq->name, &qstr, sizeof(struct qstr)); + wq->dev = autofs4_get_dev(sbi); + wq->ino = autofs4_get_ino(sbi); +- wq->uid = current_real_cred()->uid; +- wq->gid = current_real_cred()->gid; ++ wq->uid = current_cred()->uid; ++ wq->gid = current_cred()->gid; + wq->pid = pid; + wq->tgid = tgid; + wq->status = -EINTR; /* Status return if interrupted */ +diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c +index 6a26c7bd1286..e3e1a80b351e 100644 +--- a/fs/ceph/mds_client.c ++++ b/fs/ceph/mds_client.c +@@ -628,6 +628,9 @@ static void __unregister_request(struct ceph_mds_client *mdsc, + { + dout("__unregister_request %p tid %lld\n", req, req->r_tid); + ++ /* Never leave an unregistered request on an unsafe list! */ ++ list_del_init(&req->r_unsafe_item); ++ + if (req->r_tid == mdsc->oldest_tid) { + struct rb_node *p = rb_next(&req->r_node); + mdsc->oldest_tid = 0; +@@ -1036,7 +1039,6 @@ static void cleanup_session_requests(struct ceph_mds_client *mdsc, + while (!list_empty(&session->s_unsafe)) { + req = list_first_entry(&session->s_unsafe, + struct ceph_mds_request, r_unsafe_item); +- list_del_init(&req->r_unsafe_item); + pr_warn_ratelimited(" dropping unsafe request %llu\n", + req->r_tid); + __unregister_request(mdsc, req); +@@ -2423,7 +2425,6 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) + * useful we could do with a revised return value. + */ + dout("got safe reply %llu, mds%d\n", tid, mds); +- list_del_init(&req->r_unsafe_item); + + /* last unsafe request during umount? */ + if (mdsc->stopping && !__get_oldest_req(mdsc)) +diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c +index ec9dbbcca3b9..9156be545b0f 100644 +--- a/fs/cifs/cifs_dfs_ref.c ++++ b/fs/cifs/cifs_dfs_ref.c +@@ -245,7 +245,8 @@ char *cifs_compose_mount_options(const char *sb_mountdata, + * @fullpath: full path in UNC format + * @ref: server's referral + */ +-static struct vfsmount *cifs_dfs_do_refmount(struct cifs_sb_info *cifs_sb, ++static struct vfsmount *cifs_dfs_do_refmount(struct dentry *mntpt, ++ struct cifs_sb_info *cifs_sb, + const char *fullpath, const struct dfs_info3_param *ref) + { + struct vfsmount *mnt; +@@ -259,7 +260,7 @@ static struct vfsmount *cifs_dfs_do_refmount(struct cifs_sb_info *cifs_sb, + if (IS_ERR(mountdata)) + return (struct vfsmount *)mountdata; + +- mnt = vfs_kern_mount(&cifs_fs_type, 0, devname, mountdata); ++ mnt = vfs_submount(mntpt, &cifs_fs_type, devname, mountdata); + kfree(mountdata); + kfree(devname); + return mnt; +@@ -334,7 +335,7 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt) + mnt = ERR_PTR(-EINVAL); + break; + } +- mnt = cifs_dfs_do_refmount(cifs_sb, ++ mnt = cifs_dfs_do_refmount(mntpt, cifs_sb, + full_path, referrals + i); + cifs_dbg(FYI, "%s: cifs_dfs_do_refmount:%s , mnt:%p\n", + __func__, referrals[i].node_name, mnt); +diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c +index f17fcf89e18e..1e30f74a9527 100644 +--- a/fs/debugfs/inode.c ++++ b/fs/debugfs/inode.c +@@ -187,9 +187,9 @@ static const struct super_operations debugfs_super_operations = { + + static struct vfsmount *debugfs_automount(struct path *path) + { +- struct vfsmount *(*f)(void *); +- f = (struct vfsmount *(*)(void *))path->dentry->d_fsdata; +- return f(d_inode(path->dentry)->i_private); ++ debugfs_automount_t f; ++ f = (debugfs_automount_t)path->dentry->d_fsdata; ++ return f(path->dentry, d_inode(path->dentry)->i_private); + } + + static const struct dentry_operations debugfs_dops = { +@@ -504,7 +504,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_dir); + */ + struct dentry *debugfs_create_automount(const char *name, + struct dentry *parent, +- struct vfsmount *(*f)(void *), ++ debugfs_automount_t f, + void *data) + { + struct dentry *dentry = start_creating(name, parent); +diff --git a/fs/fat/inode.c b/fs/fat/inode.c +index 338d2f73eb29..a2c05f2ada6d 100644 +--- a/fs/fat/inode.c ++++ b/fs/fat/inode.c +@@ -1359,6 +1359,16 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat, + return 0; + } + ++static void fat_dummy_inode_init(struct inode *inode) ++{ ++ /* Initialize this dummy inode to work as no-op. */ ++ MSDOS_I(inode)->mmu_private = 0; ++ MSDOS_I(inode)->i_start = 0; ++ MSDOS_I(inode)->i_logstart = 0; ++ MSDOS_I(inode)->i_attrs = 0; ++ MSDOS_I(inode)->i_pos = 0; ++} ++ + static int fat_read_root(struct inode *inode) + { + struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb); +@@ -1803,12 +1813,13 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, + fat_inode = new_inode(sb); + if (!fat_inode) + goto out_fail; +- MSDOS_I(fat_inode)->i_pos = 0; ++ fat_dummy_inode_init(fat_inode); + sbi->fat_inode = fat_inode; + + fsinfo_inode = new_inode(sb); + if (!fsinfo_inode) + goto out_fail; ++ fat_dummy_inode_init(fsinfo_inode); + fsinfo_inode->i_ino = MSDOS_FSINFO_INO; + sbi->fsinfo_inode = fsinfo_inode; + insert_inode_hash(fsinfo_inode); +diff --git a/fs/mount.h b/fs/mount.h +index d2e25d7b64b3..d8295f273a2f 100644 +--- a/fs/mount.h ++++ b/fs/mount.h +@@ -89,7 +89,6 @@ static inline int is_mounted(struct vfsmount *mnt) + } + + extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *); +-extern struct mount *__lookup_mnt_last(struct vfsmount *, struct dentry *); + + extern int __legitimize_mnt(struct vfsmount *, unsigned); + extern bool legitimize_mnt(struct vfsmount *, unsigned); +diff --git a/fs/namei.c b/fs/namei.c +index 5b4eed221530..d5e5140c1045 100644 +--- a/fs/namei.c ++++ b/fs/namei.c +@@ -1100,7 +1100,6 @@ static int follow_automount(struct path *path, struct nameidata *nd, + bool *need_mntput) + { + struct vfsmount *mnt; +- const struct cred *old_cred; + int err; + + if (!path->dentry->d_op || !path->dentry->d_op->d_automount) +@@ -1129,9 +1128,7 @@ static int follow_automount(struct path *path, struct nameidata *nd, + if (nd->total_link_count >= 40) + return -ELOOP; + +- old_cred = override_creds(&init_cred); + mnt = path->dentry->d_op->d_automount(path); +- revert_creds(old_cred); + if (IS_ERR(mnt)) { + /* + * The filesystem is allowed to return -EISDIR here to indicate +diff --git a/fs/namespace.c b/fs/namespace.c +index 7cea503ae06d..5e35057f07ac 100644 +--- a/fs/namespace.c ++++ b/fs/namespace.c +@@ -641,28 +641,6 @@ struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry) + } + + /* +- * find the last mount at @dentry on vfsmount @mnt. +- * mount_lock must be held. +- */ +-struct mount *__lookup_mnt_last(struct vfsmount *mnt, struct dentry *dentry) +-{ +- struct mount *p, *res = NULL; +- p = __lookup_mnt(mnt, dentry); +- if (!p) +- goto out; +- if (!(p->mnt.mnt_flags & MNT_UMOUNT)) +- res = p; +- hlist_for_each_entry_continue(p, mnt_hash) { +- if (&p->mnt_parent->mnt != mnt || p->mnt_mountpoint != dentry) +- break; +- if (!(p->mnt.mnt_flags & MNT_UMOUNT)) +- res = p; +- } +-out: +- return res; +-} +- +-/* + * lookup_mnt - Return the first child mount mounted at path + * + * "First" means first mounted chronologically. If you create the +@@ -882,6 +860,13 @@ void mnt_set_mountpoint(struct mount *mnt, + hlist_add_head(&child_mnt->mnt_mp_list, &mp->m_list); + } + ++static void __attach_mnt(struct mount *mnt, struct mount *parent) ++{ ++ hlist_add_head_rcu(&mnt->mnt_hash, ++ m_hash(&parent->mnt, mnt->mnt_mountpoint)); ++ list_add_tail(&mnt->mnt_child, &parent->mnt_mounts); ++} ++ + /* + * vfsmount lock must be held for write + */ +@@ -890,28 +875,45 @@ static void attach_mnt(struct mount *mnt, + struct mountpoint *mp) + { + mnt_set_mountpoint(parent, mp, mnt); +- hlist_add_head_rcu(&mnt->mnt_hash, m_hash(&parent->mnt, mp->m_dentry)); +- list_add_tail(&mnt->mnt_child, &parent->mnt_mounts); ++ __attach_mnt(mnt, parent); + } + +-static void attach_shadowed(struct mount *mnt, +- struct mount *parent, +- struct mount *shadows) ++void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, struct mount *mnt) + { +- if (shadows) { +- hlist_add_behind_rcu(&mnt->mnt_hash, &shadows->mnt_hash); +- list_add(&mnt->mnt_child, &shadows->mnt_child); +- } else { +- hlist_add_head_rcu(&mnt->mnt_hash, +- m_hash(&parent->mnt, mnt->mnt_mountpoint)); +- list_add_tail(&mnt->mnt_child, &parent->mnt_mounts); +- } ++ struct mountpoint *old_mp = mnt->mnt_mp; ++ struct dentry *old_mountpoint = mnt->mnt_mountpoint; ++ struct mount *old_parent = mnt->mnt_parent; ++ ++ list_del_init(&mnt->mnt_child); ++ hlist_del_init(&mnt->mnt_mp_list); ++ hlist_del_init_rcu(&mnt->mnt_hash); ++ ++ attach_mnt(mnt, parent, mp); ++ ++ put_mountpoint(old_mp); ++ ++ /* ++ * Safely avoid even the suggestion this code might sleep or ++ * lock the mount hash by taking advantage of the knowledge that ++ * mnt_change_mountpoint will not release the final reference ++ * to a mountpoint. ++ * ++ * During mounting, the mount passed in as the parent mount will ++ * continue to use the old mountpoint and during unmounting, the ++ * old mountpoint will continue to exist until namespace_unlock, ++ * which happens well after mnt_change_mountpoint. ++ */ ++ spin_lock(&old_mountpoint->d_lock); ++ old_mountpoint->d_lockref.count--; ++ spin_unlock(&old_mountpoint->d_lock); ++ ++ mnt_add_count(old_parent, -1); + } + + /* + * vfsmount lock must be held for write + */ +-static void commit_tree(struct mount *mnt, struct mount *shadows) ++static void commit_tree(struct mount *mnt) + { + struct mount *parent = mnt->mnt_parent; + struct mount *m; +@@ -929,7 +931,7 @@ static void commit_tree(struct mount *mnt, struct mount *shadows) + n->mounts += n->pending_mounts; + n->pending_mounts = 0; + +- attach_shadowed(mnt, parent, shadows); ++ __attach_mnt(mnt, parent); + touch_mnt_namespace(n); + } + +@@ -993,6 +995,21 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void + } + EXPORT_SYMBOL_GPL(vfs_kern_mount); + ++struct vfsmount * ++vfs_submount(const struct dentry *mountpoint, struct file_system_type *type, ++ const char *name, void *data) ++{ ++ /* Until it is worked out how to pass the user namespace ++ * through from the parent mount to the submount don't support ++ * unprivileged mounts with submounts. ++ */ ++ if (mountpoint->d_sb->s_user_ns != &init_user_ns) ++ return ERR_PTR(-EPERM); ++ ++ return vfs_kern_mount(type, MS_SUBMOUNT, name, data); ++} ++EXPORT_SYMBOL_GPL(vfs_submount); ++ + static struct mount *clone_mnt(struct mount *old, struct dentry *root, + int flag) + { +@@ -1737,7 +1754,6 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry, + continue; + + for (s = r; s; s = next_mnt(s, r)) { +- struct mount *t = NULL; + if (!(flag & CL_COPY_UNBINDABLE) && + IS_MNT_UNBINDABLE(s)) { + s = skip_mnt_tree(s); +@@ -1759,14 +1775,7 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry, + goto out; + lock_mount_hash(); + list_add_tail(&q->mnt_list, &res->mnt_list); +- mnt_set_mountpoint(parent, p->mnt_mp, q); +- if (!list_empty(&parent->mnt_mounts)) { +- t = list_last_entry(&parent->mnt_mounts, +- struct mount, mnt_child); +- if (t->mnt_mp != p->mnt_mp) +- t = NULL; +- } +- attach_shadowed(q, parent, t); ++ attach_mnt(q, parent, p->mnt_mp); + unlock_mount_hash(); + } + } +@@ -1967,10 +1976,18 @@ static int attach_recursive_mnt(struct mount *source_mnt, + { + HLIST_HEAD(tree_list); + struct mnt_namespace *ns = dest_mnt->mnt_ns; ++ struct mountpoint *smp; + struct mount *child, *p; + struct hlist_node *n; + int err; + ++ /* Preallocate a mountpoint in case the new mounts need ++ * to be tucked under other mounts. ++ */ ++ smp = get_mountpoint(source_mnt->mnt.mnt_root); ++ if (IS_ERR(smp)) ++ return PTR_ERR(smp); ++ + /* Is there space to add these mounts to the mount namespace? */ + if (!parent_path) { + err = count_mounts(ns, source_mnt); +@@ -1997,16 +2014,19 @@ static int attach_recursive_mnt(struct mount *source_mnt, + touch_mnt_namespace(source_mnt->mnt_ns); + } else { + mnt_set_mountpoint(dest_mnt, dest_mp, source_mnt); +- commit_tree(source_mnt, NULL); ++ commit_tree(source_mnt); + } + + hlist_for_each_entry_safe(child, n, &tree_list, mnt_hash) { + struct mount *q; + hlist_del_init(&child->mnt_hash); +- q = __lookup_mnt_last(&child->mnt_parent->mnt, +- child->mnt_mountpoint); +- commit_tree(child, q); ++ q = __lookup_mnt(&child->mnt_parent->mnt, ++ child->mnt_mountpoint); ++ if (q) ++ mnt_change_mountpoint(child, smp, q); ++ commit_tree(child); + } ++ put_mountpoint(smp); + unlock_mount_hash(); + + return 0; +@@ -2021,6 +2041,11 @@ static int attach_recursive_mnt(struct mount *source_mnt, + cleanup_group_ids(source_mnt, NULL); + out: + ns->pending_mounts = 0; ++ ++ read_seqlock_excl(&mount_lock); ++ put_mountpoint(smp); ++ read_sequnlock_excl(&mount_lock); ++ + return err; + } + +@@ -2769,7 +2794,7 @@ long do_mount(const char *dev_name, const char __user *dir_name, + + flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN | + MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT | +- MS_STRICTATIME | MS_NOREMOTELOCK); ++ MS_STRICTATIME | MS_NOREMOTELOCK | MS_SUBMOUNT); + + if (flags & MS_REMOUNT) + retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags, +diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c +index 5551e8ef67fd..e49d831c4e85 100644 +--- a/fs/nfs/namespace.c ++++ b/fs/nfs/namespace.c +@@ -226,7 +226,7 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server, + const char *devname, + struct nfs_clone_mount *mountdata) + { +- return vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata); ++ return vfs_submount(mountdata->dentry, &nfs_xdev_fs_type, devname, mountdata); + } + + /** +diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c +index d21104912676..d8b040bd9814 100644 +--- a/fs/nfs/nfs4namespace.c ++++ b/fs/nfs/nfs4namespace.c +@@ -279,7 +279,7 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata, + mountdata->hostname, + mountdata->mnt_path); + +- mnt = vfs_kern_mount(&nfs4_referral_fs_type, 0, page, mountdata); ++ mnt = vfs_submount(mountdata->dentry, &nfs4_referral_fs_type, page, mountdata); + if (!IS_ERR(mnt)) + break; + } +diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c +index c48859f16e7b..67c24351a67f 100644 +--- a/fs/orangefs/super.c ++++ b/fs/orangefs/super.c +@@ -115,6 +115,13 @@ static struct inode *orangefs_alloc_inode(struct super_block *sb) + return &orangefs_inode->vfs_inode; + } + ++static void orangefs_i_callback(struct rcu_head *head) ++{ ++ struct inode *inode = container_of(head, struct inode, i_rcu); ++ struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); ++ kmem_cache_free(orangefs_inode_cache, orangefs_inode); ++} ++ + static void orangefs_destroy_inode(struct inode *inode) + { + struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); +@@ -123,7 +130,7 @@ static void orangefs_destroy_inode(struct inode *inode) + "%s: deallocated %p destroying inode %pU\n", + __func__, orangefs_inode, get_khandle_from_ino(inode)); + +- kmem_cache_free(orangefs_inode_cache, orangefs_inode); ++ call_rcu(&inode->i_rcu, orangefs_i_callback); + } + + /* +diff --git a/fs/pnode.c b/fs/pnode.c +index 234a9ac49958..b394ca5307ec 100644 +--- a/fs/pnode.c ++++ b/fs/pnode.c +@@ -324,6 +324,21 @@ int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp, + return ret; + } + ++static struct mount *find_topper(struct mount *mnt) ++{ ++ /* If there is exactly one mount covering mnt completely return it. */ ++ struct mount *child; ++ ++ if (!list_is_singular(&mnt->mnt_mounts)) ++ return NULL; ++ ++ child = list_first_entry(&mnt->mnt_mounts, struct mount, mnt_child); ++ if (child->mnt_mountpoint != mnt->mnt.mnt_root) ++ return NULL; ++ ++ return child; ++} ++ + /* + * return true if the refcount is greater than count + */ +@@ -344,9 +359,8 @@ static inline int do_refcount_check(struct mount *mnt, int count) + */ + int propagate_mount_busy(struct mount *mnt, int refcnt) + { +- struct mount *m, *child; ++ struct mount *m, *child, *topper; + struct mount *parent = mnt->mnt_parent; +- int ret = 0; + + if (mnt == parent) + return do_refcount_check(mnt, refcnt); +@@ -361,12 +375,24 @@ int propagate_mount_busy(struct mount *mnt, int refcnt) + + for (m = propagation_next(parent, parent); m; + m = propagation_next(m, parent)) { +- child = __lookup_mnt_last(&m->mnt, mnt->mnt_mountpoint); +- if (child && list_empty(&child->mnt_mounts) && +- (ret = do_refcount_check(child, 1))) +- break; ++ int count = 1; ++ child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint); ++ if (!child) ++ continue; ++ ++ /* Is there exactly one mount on the child that covers ++ * it completely whose reference should be ignored? ++ */ ++ topper = find_topper(child); ++ if (topper) ++ count += 1; ++ else if (!list_empty(&child->mnt_mounts)) ++ continue; ++ ++ if (do_refcount_check(child, count)) ++ return 1; + } +- return ret; ++ return 0; + } + + /* +@@ -383,7 +409,7 @@ void propagate_mount_unlock(struct mount *mnt) + + for (m = propagation_next(parent, parent); m; + m = propagation_next(m, parent)) { +- child = __lookup_mnt_last(&m->mnt, mnt->mnt_mountpoint); ++ child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint); + if (child) + child->mnt.mnt_flags &= ~MNT_LOCKED; + } +@@ -401,9 +427,11 @@ static void mark_umount_candidates(struct mount *mnt) + + for (m = propagation_next(parent, parent); m; + m = propagation_next(m, parent)) { +- struct mount *child = __lookup_mnt_last(&m->mnt, ++ struct mount *child = __lookup_mnt(&m->mnt, + mnt->mnt_mountpoint); +- if (child && (!IS_MNT_LOCKED(child) || IS_MNT_MARKED(m))) { ++ if (!child || (child->mnt.mnt_flags & MNT_UMOUNT)) ++ continue; ++ if (!IS_MNT_LOCKED(child) || IS_MNT_MARKED(m)) { + SET_MNT_MARK(child); + } + } +@@ -422,8 +450,8 @@ static void __propagate_umount(struct mount *mnt) + + for (m = propagation_next(parent, parent); m; + m = propagation_next(m, parent)) { +- +- struct mount *child = __lookup_mnt_last(&m->mnt, ++ struct mount *topper; ++ struct mount *child = __lookup_mnt(&m->mnt, + mnt->mnt_mountpoint); + /* + * umount the child only if the child has no children +@@ -432,6 +460,15 @@ static void __propagate_umount(struct mount *mnt) + if (!child || !IS_MNT_MARKED(child)) + continue; + CLEAR_MNT_MARK(child); ++ ++ /* If there is exactly one mount covering all of child ++ * replace child with that mount. ++ */ ++ topper = find_topper(child); ++ if (topper) ++ mnt_change_mountpoint(child->mnt_parent, child->mnt_mp, ++ topper); ++ + if (list_empty(&child->mnt_mounts)) { + list_del_init(&child->mnt_child); + child->mnt.mnt_flags |= MNT_UMOUNT; +diff --git a/fs/pnode.h b/fs/pnode.h +index 550f5a8b4fcf..dc87e65becd2 100644 +--- a/fs/pnode.h ++++ b/fs/pnode.h +@@ -49,6 +49,8 @@ int get_dominating_id(struct mount *mnt, const struct path *root); + unsigned int mnt_get_count(struct mount *mnt); + void mnt_set_mountpoint(struct mount *, struct mountpoint *, + struct mount *); ++void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, ++ struct mount *mnt); + struct mount *copy_tree(struct mount *, struct dentry *, int); + bool is_path_reachable(struct mount *, struct dentry *, + const struct path *root); +diff --git a/fs/super.c b/fs/super.c +index c183835566c1..1058bf3e8724 100644 +--- a/fs/super.c ++++ b/fs/super.c +@@ -470,7 +470,7 @@ struct super_block *sget_userns(struct file_system_type *type, + struct super_block *old; + int err; + +- if (!(flags & MS_KERNMOUNT) && ++ if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT)) && + !(type->fs_flags & FS_USERNS_MOUNT) && + !capable(CAP_SYS_ADMIN)) + return ERR_PTR(-EPERM); +@@ -500,7 +500,7 @@ struct super_block *sget_userns(struct file_system_type *type, + } + if (!s) { + spin_unlock(&sb_lock); +- s = alloc_super(type, flags, user_ns); ++ s = alloc_super(type, (flags & ~MS_SUBMOUNT), user_ns); + if (!s) + return ERR_PTR(-ENOMEM); + goto retry; +@@ -541,8 +541,15 @@ struct super_block *sget(struct file_system_type *type, + { + struct user_namespace *user_ns = current_user_ns(); + ++ /* We don't yet pass the user namespace of the parent ++ * mount through to here so always use &init_user_ns ++ * until that changes. ++ */ ++ if (flags & MS_SUBMOUNT) ++ user_ns = &init_user_ns; ++ + /* Ensure the requestor has permissions over the target filesystem */ +- if (!(flags & MS_KERNMOUNT) && !ns_capable(user_ns, CAP_SYS_ADMIN)) ++ if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT)) && !ns_capable(user_ns, CAP_SYS_ADMIN)) + return ERR_PTR(-EPERM); + + return sget_userns(type, test, set, flags, user_ns, data); +diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h +index 9a9041784dcf..412906609954 100644 +--- a/include/linux/ceph/osdmap.h ++++ b/include/linux/ceph/osdmap.h +@@ -57,7 +57,7 @@ static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool) + case CEPH_POOL_TYPE_EC: + return false; + default: +- BUG_ON(1); ++ BUG(); + } + } + +diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h +index 1b413a9aab81..b20a0945b550 100644 +--- a/include/linux/debugfs.h ++++ b/include/linux/debugfs.h +@@ -96,9 +96,10 @@ struct dentry *debugfs_create_dir(const char *name, struct dentry *parent); + struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent, + const char *dest); + ++typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *); + struct dentry *debugfs_create_automount(const char *name, + struct dentry *parent, +- struct vfsmount *(*f)(void *), ++ debugfs_automount_t f, + void *data); + + void debugfs_remove(struct dentry *dentry); +diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h +index 8458c5351e56..77e7af32543f 100644 +--- a/include/linux/libnvdimm.h ++++ b/include/linux/libnvdimm.h +@@ -70,6 +70,8 @@ struct nd_cmd_desc { + + struct nd_interleave_set { + u64 cookie; ++ /* compatibility with initial buggy Linux implementation */ ++ u64 altcookie; + }; + + struct nd_mapping_desc { +diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h +index c15373894a42..b37dee3acaba 100644 +--- a/include/linux/lockd/lockd.h ++++ b/include/linux/lockd/lockd.h +@@ -355,7 +355,8 @@ static inline int nlm_privileged_requester(const struct svc_rqst *rqstp) + static inline int nlm_compare_locks(const struct file_lock *fl1, + const struct file_lock *fl2) + { +- return fl1->fl_pid == fl2->fl_pid ++ return file_inode(fl1->fl_file) == file_inode(fl2->fl_file) ++ && fl1->fl_pid == fl2->fl_pid + && fl1->fl_owner == fl2->fl_owner + && fl1->fl_start == fl2->fl_start + && fl1->fl_end == fl2->fl_end +diff --git a/include/linux/mount.h b/include/linux/mount.h +index 1172cce949a4..e0f3a82eee6d 100644 +--- a/include/linux/mount.h ++++ b/include/linux/mount.h +@@ -90,6 +90,9 @@ struct file_system_type; + extern struct vfsmount *vfs_kern_mount(struct file_system_type *type, + int flags, const char *name, + void *data); ++extern struct vfsmount *vfs_submount(const struct dentry *mountpoint, ++ struct file_system_type *type, ++ const char *name, void *data); + + extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list); + extern void mark_mounts_for_expiry(struct list_head *mounts); +diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h +index 48bc1ac1da43..6233e8fd95b5 100644 +--- a/include/target/target_core_base.h ++++ b/include/target/target_core_base.h +@@ -732,6 +732,7 @@ struct se_lun { + struct config_group lun_group; + struct se_port_stat_grps port_stat_grps; + struct completion lun_ref_comp; ++ struct completion lun_shutdown_comp; + struct percpu_ref lun_ref; + struct list_head lun_dev_link; + struct hlist_node link; +diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h +index acb2b6152ba0..474995568f35 100644 +--- a/include/uapi/linux/fs.h ++++ b/include/uapi/linux/fs.h +@@ -132,6 +132,7 @@ struct inodes_stat_t { + #define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */ + + /* These sb flags are internal to the kernel */ ++#define MS_SUBMOUNT (1<<26) + #define MS_NOREMOTELOCK (1<<27) + #define MS_NOSEC (1<<28) + #define MS_BORN (1<<29) +diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c +index 8696ce6bf2f6..90b66ed6f0e2 100644 +--- a/kernel/trace/trace.c ++++ b/kernel/trace/trace.c +@@ -7241,7 +7241,7 @@ init_tracer_tracefs(struct trace_array *tr, struct dentry *d_tracer) + ftrace_init_tracefs(tr, d_tracer); + } + +-static struct vfsmount *trace_automount(void *ingore) ++static struct vfsmount *trace_automount(struct dentry *mntpt, void *ingore) + { + struct vfsmount *mnt; + struct file_system_type *type; +@@ -7254,7 +7254,7 @@ static struct vfsmount *trace_automount(void *ingore) + type = get_fs_type("tracefs"); + if (!type) + return NULL; +- mnt = vfs_kern_mount(type, 0, "tracefs", NULL); ++ mnt = vfs_submount(mntpt, type, "tracefs", NULL); + put_filesystem(type); + if (IS_ERR(mnt)) + return NULL; +diff --git a/mm/memcontrol.c b/mm/memcontrol.c +index 4c6ade54d833..0de26691f0f5 100644 +--- a/mm/memcontrol.c ++++ b/mm/memcontrol.c +@@ -4139,17 +4139,22 @@ static void free_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node) + kfree(memcg->nodeinfo[node]); + } + +-static void mem_cgroup_free(struct mem_cgroup *memcg) ++static void __mem_cgroup_free(struct mem_cgroup *memcg) + { + int node; + +- memcg_wb_domain_exit(memcg); + for_each_node(node) + free_mem_cgroup_per_node_info(memcg, node); + free_percpu(memcg->stat); + kfree(memcg); + } + ++static void mem_cgroup_free(struct mem_cgroup *memcg) ++{ ++ memcg_wb_domain_exit(memcg); ++ __mem_cgroup_free(memcg); ++} ++ + static struct mem_cgroup *mem_cgroup_alloc(void) + { + struct mem_cgroup *memcg; +@@ -4200,7 +4205,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void) + fail: + if (memcg->id.id > 0) + idr_remove(&mem_cgroup_idr, memcg->id.id); +- mem_cgroup_free(memcg); ++ __mem_cgroup_free(memcg); + return NULL; + } + +diff --git a/mm/mlock.c b/mm/mlock.c +index cdbed8aaa426..665ab75b5533 100644 +--- a/mm/mlock.c ++++ b/mm/mlock.c +@@ -441,7 +441,7 @@ void munlock_vma_pages_range(struct vm_area_struct *vma, + + while (start < end) { + struct page *page; +- unsigned int page_mask; ++ unsigned int page_mask = 0; + unsigned long page_increm; + struct pagevec pvec; + struct zone *zone; +@@ -455,8 +455,7 @@ void munlock_vma_pages_range(struct vm_area_struct *vma, + * suits munlock very well (and if somehow an abnormal page + * has sneaked into the range, we won't oops here: great). + */ +- page = follow_page_mask(vma, start, FOLL_GET | FOLL_DUMP, +- &page_mask); ++ page = follow_page(vma, start, FOLL_GET | FOLL_DUMP); + + if (page && !IS_ERR(page)) { + if (PageTransTail(page)) { +@@ -467,8 +466,8 @@ void munlock_vma_pages_range(struct vm_area_struct *vma, + /* + * Any THP page found by follow_page_mask() may + * have gotten split before reaching +- * munlock_vma_page(), so we need to recompute +- * the page_mask here. ++ * munlock_vma_page(), so we need to compute ++ * the page_mask here instead. + */ + page_mask = munlock_vma_page(page); + unlock_page(page); +diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c +index 3b5fd4188f2a..58ad23a44109 100644 +--- a/net/mac80211/agg-rx.c ++++ b/net/mac80211/agg-rx.c +@@ -398,6 +398,7 @@ void __ieee80211_start_rx_ba_session(struct sta_info *sta, + tid_agg_rx->timeout = timeout; + tid_agg_rx->stored_mpdu_num = 0; + tid_agg_rx->auto_seq = auto_seq; ++ tid_agg_rx->started = false; + tid_agg_rx->reorder_buf_filtered = 0; + status = WLAN_STATUS_SUCCESS; + +diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c +index 28a3a0957c9e..76a8bcd8ef11 100644 +--- a/net/mac80211/pm.c ++++ b/net/mac80211/pm.c +@@ -168,6 +168,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) + break; + } + ++ flush_delayed_work(&sdata->dec_tailroom_needed_wk); + drv_remove_interface(local, sdata); + } + +diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c +index 2384b4aae064..a697ddf56334 100644 +--- a/net/mac80211/rx.c ++++ b/net/mac80211/rx.c +@@ -4,7 +4,7 @@ + * Copyright 2006-2007 Jiri Benc <[email protected]> + * Copyright 2007-2010 Johannes Berg <[email protected]> + * Copyright 2013-2014 Intel Mobile Communications GmbH +- * Copyright(c) 2015 - 2016 Intel Deutschland GmbH ++ * Copyright(c) 2015 - 2017 Intel Deutschland GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as +@@ -1034,6 +1034,18 @@ static bool ieee80211_sta_manage_reorder_buf(struct ieee80211_sub_if_data *sdata + buf_size = tid_agg_rx->buf_size; + head_seq_num = tid_agg_rx->head_seq_num; + ++ /* ++ * If the current MPDU's SN is smaller than the SSN, it shouldn't ++ * be reordered. ++ */ ++ if (unlikely(!tid_agg_rx->started)) { ++ if (ieee80211_sn_less(mpdu_seq_num, head_seq_num)) { ++ ret = false; ++ goto out; ++ } ++ tid_agg_rx->started = true; ++ } ++ + /* frame with out of date sequence number */ + if (ieee80211_sn_less(mpdu_seq_num, head_seq_num)) { + dev_kfree_skb(skb); +@@ -4080,15 +4092,17 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, + ieee80211_is_beacon(hdr->frame_control))) + ieee80211_scan_rx(local, skb); + +- if (pubsta) { +- rx.sta = container_of(pubsta, struct sta_info, sta); +- rx.sdata = rx.sta->sdata; +- if (ieee80211_prepare_and_rx_handle(&rx, skb, true)) +- return; +- goto out; +- } else if (ieee80211_is_data(fc)) { ++ if (ieee80211_is_data(fc)) { + struct sta_info *sta, *prev_sta; + ++ if (pubsta) { ++ rx.sta = container_of(pubsta, struct sta_info, sta); ++ rx.sdata = rx.sta->sdata; ++ if (ieee80211_prepare_and_rx_handle(&rx, skb, true)) ++ return; ++ goto out; ++ } ++ + prev_sta = NULL; + + for_each_sta_info(local, hdr->addr2, sta, tmp) { +diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h +index dd06ef0b8861..15599c70a38f 100644 +--- a/net/mac80211/sta_info.h ++++ b/net/mac80211/sta_info.h +@@ -189,6 +189,7 @@ struct tid_ampdu_tx { + * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and + * and ssn. + * @removed: this session is removed (but might have been found due to RCU) ++ * @started: this session has started (head ssn or higher was received) + * + * This structure's lifetime is managed by RCU, assignments to + * the array holding it must hold the aggregation mutex. +@@ -212,8 +213,9 @@ struct tid_ampdu_rx { + u16 ssn; + u16 buf_size; + u16 timeout; +- bool auto_seq; +- bool removed; ++ u8 auto_seq:1, ++ removed:1, ++ started:1; + }; + + /** +diff --git a/net/mac80211/status.c b/net/mac80211/status.c +index ddf71c648cab..ad37b4e58c2f 100644 +--- a/net/mac80211/status.c ++++ b/net/mac80211/status.c +@@ -51,7 +51,8 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, + struct ieee80211_hdr *hdr = (void *)skb->data; + int ac; + +- if (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER) { ++ if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER | ++ IEEE80211_TX_CTL_AMPDU)) { + ieee80211_free_txskb(&local->hw, skb); + return; + } +diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl +index d08e214ec6e7..223d88e25e05 100755 +--- a/tools/testing/ktest/ktest.pl ++++ b/tools/testing/ktest/ktest.pl +@@ -2629,7 +2629,7 @@ sub do_run_test { + } + + waitpid $child_pid, 0; +- $child_exit = $?; ++ $child_exit = $? >> 8; + + my $end_time = time; + $test_time = $end_time - $start_time;
