Re: [PATCH] lguest: simplify lguest_iret

Denys Vlasenko writes: > Signed-off-by: Denys Vlasenko > CC: lgu...@lists.ozlabs.org > CC: x...@kernel.org > CC: linux-kernel@vger.kernel.org Oh, thanks, applied! And now it's down to one instruction, we could change try_deliver_interrupt() to handle this case (rather than ignoring the interrup

[PATCH 2/8] writeback: make writeback_control track the inode being written back

Currently, for cgroup writeback, the IO submission paths directly associate the bio's with the blkcg from inode_to_wb_blkcg_css(); however, it'd be necessary to keep more writeback context to implement foreign inode writeback detection. wbc (writeback_control) is the natural fit for the extra cont

[PATCH 4/8] truncate: swap the order of conditionals in cancel_dirty_page()

cancel_dirty_page() currently performs TestClearPageDirty() and then tests whether the mapping exists and has cap_account_dirty. This patch swaps the order so that it performs the mapping tests first. If the mapping tests fail, the dirty is cleared with ClearPageDirty(). The order or the conditio

Re: [PATCH] xfs: use GFP_NOFS argument in radix_tree_preload

Hi Dave, Thank you for letting us know. Since we are not an expert of XFS (nor want to be), we really want to let you guys know it's potential bug that you might miss (we are helping you!). And that's why Sanidhya asked (rather than sending a patch) at the first place. I agree that the comment is

[PATCH V2 1/2] af_packet: make tpacket_rcv to not set status value before run_filter

It is just an optimization. We don't need the value of status variable if the packet is filtered. Signed-off-by: Alexander Drozdov --- net/packet/af_packet.c | 7 --- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index f8db706..

[PATCH V2 2/2] af_packet: pass checksum validation status to the user

Introduce TP_STATUS_CSUM_VALID tp_status flag to tell the af_packet user that at least the transport header checksum has been already validated. For now, the flag may be set for incoming packets only. Signed-off-by: Alexander Drozdov Cc: Willem de Bruijn --- Documentation/networking/packet_mma

Re: [PATCH 2/2] watchdog: digicolor: driver for Conexant Digicolor CX92755 SoC

Hi Guenter, Adding LKML to Cc. On Sun, Mar 22, 2015 at 10:50:28PM -0700, Guenter Roeck wrote: > On 03/22/2015 10:33 PM, Baruch Siach wrote: > >+wdt->restart_handler.notifier_call = dc_restart_handler; > >+wdt->restart_handler.priority = 128; > > Is 128 intentional

Re: [LKP] [x86/platform, acpi] 7486341a98f: genirq: Flags mismatch irq 8. 00000080 (mmc0) vs. 00000000 (rtc0)

On 2015/3/20 16:38, Huang Ying wrote: > FYI, we noticed the below changes on > > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > commit 7486341a98f26857f383aec88ffa10950087c3a1 ("x86/platform, acpi: Bypass > legacy PIC and PIT in ACPI hardware reduced mode") > > > +---

[PATCH] udf: NULL dereference at udf_symlink() on error

There is no check for udf_tgetblk(), which could return NULL, in udf_symlink(). So there is a possibility of returning NULL under heavy memory pressure and possibility of NULL dereference. Signed-off-by: Changwoo Min --- fs/udf/namei.c | 4 1 file changed, 4 insertions(+) diff --git a/f

[PATCH 5/5] perf kmem: Add --live option for current allocation stat

Currently perf kmem shows total (page) allocation stat by default, but sometimes one might want to see live (total alloc-only) requests/pages only. The new --live option does this by subtracting freed allocation from the stat. Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-kmem.t

[PATCHSET 0/5] perf kmem: Implement page allocation analysis (v3)

Hello, Currently perf kmem command only analyzes SLAB memory allocation. And I'd like to introduce page allocation analysis also. Users can use --slab and/or --page option to select it. If none of these options are used, it does slab allocation analysis for backward compatibility. * changes

[PATCH 4/5] perf kmem: Support sort keys on page analysis

Add new sort keys for page: page, order, mtype, gfp - existing 'bytes', 'hit' and 'callsite' sort keys also work for page. Note that -s/--sort option should be preceded by either of --slab or --page option to determine where the sort keys applies. Now it properly groups and sorts allocation stats

[PATCH 2/5] perf kmem: Analyze page allocator events also

The perf kmem command records and analyze kernel memory allocation only for SLAB objects. This patch implement a simple page allocator analyzer using kmem:mm_page_alloc and kmem:mm_page_free events. It adds two new options of --slab and --page. The --slab option is for analyzing SLAB allocator a

[PATCH 1/5] perf kmem: Print big numbers using thousands' group

Like perf stat, this makes easy to read the numbers on stat like below: # perf kmem stat SUMMARY === Total bytes requested: 9,770,900 Total bytes allocated: 9,782,712 Total bytes wasted on internal fragmentation: 11,812 Internal fragmentation: 0.120744% Cross CPU allocations:

[PATCH 3/5] perf kmem: Implement stat --page --caller

It perf kmem support caller statistics for page. Unlike slab case, the tracepoints in page allocator don't provide callsite info. So it records with callchain and extracts callsite info. Note that the callchain contains several memory allocation functions which has no meaning for users. So skip

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