From: Arnd Bergmann
On almost all architectures, there are no remaining callers
of set_fs(), so CONFIG_SET_FS can be disabled, along with
removing the thread_info field and any references to it.
This turns access_ok() into a cheaper check against TASK_SIZE_MAX.
Signed-off-by: Arnd Bergmann
---
arch/alpha/Kconfig| 1 -
arch/alpha/include/asm/processor.h| 4 --
arch/alpha/include/asm/thread_info.h | 2 -
arch/alpha/include/asm/uaccess.h | 19 --
arch/arc/Kconfig | 1 -
arch/arc/include/asm/segment.h| 20 ---
arch/arc/include/asm/thread_info.h| 3 -
arch/arc/include/asm/uaccess.h| 1 -
arch/csky/Kconfig | 1 -
arch/csky/include/asm/processor.h | 2 -
arch/csky/include/asm/segment.h | 10
arch/csky/include/asm/thread_info.h | 2 -
arch/csky/include/asm/uaccess.h | 3 -
arch/csky/kernel/asm-offsets.c| 1 -
arch/h8300/Kconfig| 1 -
arch/h8300/include/asm/processor.h| 1 -
arch/h8300/include/asm/segment.h | 40 -
arch/h8300/include/asm/thread_info.h | 3 -
arch/h8300/kernel/entry.S | 1 -
arch/h8300/kernel/head_ram.S | 1 -
arch/h8300/mm/init.c | 6 --
arch/h8300/mm/memory.c| 1 -
arch/hexagon/Kconfig | 1 -
arch/hexagon/include/asm/thread_info.h| 6 --
arch/hexagon/kernel/process.c | 1 -
arch/microblaze/Kconfig | 1 -
arch/microblaze/include/asm/thread_info.h | 6 --
arch/microblaze/include/asm/uaccess.h | 24
arch/microblaze/kernel/asm-offsets.c | 1 -
arch/microblaze/kernel/process.c | 1 -
arch/nds32/Kconfig| 1 -
arch/nds32/include/asm/thread_info.h | 4 --
arch/nds32/include/asm/uaccess.h | 15 +
arch/nds32/mm/alignment.c | 3 -
arch/nios2/Kconfig| 1 -
arch/nios2/include/asm/thread_info.h | 9 ---
arch/nios2/include/asm/uaccess.h | 12
arch/openrisc/Kconfig | 1 -
arch/openrisc/include/asm/thread_info.h | 7 ---
arch/openrisc/include/asm/uaccess.h | 23
arch/sparc/Kconfig| 2 +-
arch/sparc/include/asm/processor_32.h | 6 --
arch/sparc/include/asm/uaccess_32.h | 13 -
arch/sparc/kernel/process_32.c| 2 -
arch/xtensa/Kconfig | 1 -
arch/xtensa/include/asm/asm-uaccess.h | 71 ---
arch/xtensa/include/asm/processor.h | 7 ---
arch/xtensa/include/asm/thread_info.h | 3 -
arch/xtensa/include/asm/uaccess.h | 16 -
arch/xtensa/kernel/asm-offsets.c | 3 -
include/asm-generic/uaccess.h | 25 +---
51 files changed, 3 insertions(+), 387 deletions(-)
delete mode 100644 arch/arc/include/asm/segment.h
delete mode 100644 arch/csky/include/asm/segment.h
delete mode 100644 arch/h8300/include/asm/segment.h
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 4e87783c90ad..eee8b5b0a58b 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -35,7 +35,6 @@ config ALPHA
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
select MMU_GATHER_NO_RANGE
- select SET_FS
select SPARSEMEM_EXTREME if SPARSEMEM
select ZONE_DMA
help
diff --git a/arch/alpha/include/asm/processor.h
b/arch/alpha/include/asm/processor.h
index 090499c99c1c..43e234c518b1 100644
--- a/arch/alpha/include/asm/processor.h
+++ b/arch/alpha/include/asm/processor.h
@@ -26,10 +26,6 @@
#define TASK_UNMAPPED_BASE \
((current->personality & ADDR_LIMIT_32BIT) ? 0x4000 : TASK_SIZE / 2)
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
/* This is dead. Everything has been moved to thread_info. */
struct thread_struct { };
#define INIT_THREAD { }
diff --git a/arch/alpha/include/asm/thread_info.h
b/arch/alpha/include/asm/thread_info.h
index 2592356e3215..fdc485d7787a 100644
--- a/arch/alpha/include/asm/thread_info.h
+++ b/arch/alpha/include/asm/thread_info.h
@@ -19,7 +19,6 @@ struct thread_info {
unsigned intflags; /* low level flags */
unsigned intieee_state; /* see fpu.h */
- mm_segment_taddr_limit; /* thread address space */
unsignedcpu;/* current CPU */
int preempt_count; /* 0 => preemptable, <0 => BUG */
unsigned intstatus; /* thread-synchronous flags */
@@ -35,7 +34,6 @@ struct thread_info {
#define INIT_THREAD_INFO(tsk) \
{ \
.task = , \
- .addr_limit = KERNEL_DS,\
