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linux/arch/arm/mm
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Shaohua Li 45cac65b0f readahead: fault retry breaks mmap file read random detection 
.fault now can retry.  The retry can break state machine of .fault.  In
filemap_fault, if page is miss, ra->mmap_miss is increased.  In the second
try, since the page is in page cache now, ra->mmap_miss is decreased.  And
these are done in one fault, so we can't detect random mmap file access.

Add a new flag to indicate .fault is tried once.  In the second try, skip
ra->mmap_miss decreasing.  The filemap_fault state machine is ok with it.

I only tested x86, didn't test other archs, but looks the change for other
archs is obvious, but who knows :)

Signed-off-by: Shaohua Li <shaohua.li@fusionio.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-09 16:22:47 +09:00
..
abort-ev4.S
abort-ev4t.S
abort-ev5t.S
abort-ev5tj.S
abort-ev6.S ARM: 7396/1: errata: only handle ARM erratum #326103 on affected cores 2012-04-23 14:21:52 +01:00
abort-ev7.S
abort-lv4t.S
abort-macro.S
abort-nommu.S
alignment.c ARM: Fix build warning in arch/arm/mm/alignment.c 2012-09-15 21:43:31 +01:00
cache-fa.S
cache-feroceon-l2.c
cache-l2x0.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-10-07 21:20:57 +09:00
cache-tauros2.c ARM: cache: add dt support for tauros2 cache 2012-08-16 16:16:50 +08:00
cache-v3.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v4.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v4wb.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v4wt.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v6.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v7.S ARM: 7541/1: Add ARM ERRATA 775420 workaround 2012-09-28 21:11:49 +01:00
cache-xsc3l2.c
context.c ARM: 7502/1: contextidr: avoid using bfi instruction during notifier 2012-08-25 09:15:57 +01:00
copypage-fa.c
copypage-feroceon.c
copypage-v4mc.c
copypage-v4wb.c
copypage-v4wt.c
copypage-v6.c
copypage-xsc3.c
copypage-xscale.c
dma-mapping.c Merge branch 'next-cleanup' into for-v3.7 2012-10-02 09:24:24 +02:00
extable.c
fault-armv.c mm: replace vma prio_tree with an interval tree 2012-10-09 16:22:39 +09:00
fault.c readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
fault.h
flush.c mm: replace vma prio_tree with an interval tree 2012-10-09 16:22:39 +09:00
fsr-2level.c
fsr-3level.c
highmem.c
idmap.c
init.c ARM: Allow arm_memblock_steal() to remove memory from any RAM region 2012-08-13 00:22:28 +01:00
iomap.c
ioremap.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-10-07 21:20:57 +09:00
Kconfig ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs 2012-05-05 05:50:50 +01:00
Makefile ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs 2012-05-05 05:50:50 +01:00
mm.h ARM: Fix ioremap() of address zero 2012-08-25 09:11:40 +01:00
mmap.c
mmu.c Merge branch 'for-v3.7' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping 2012-10-02 19:13:12 -07:00
nommu.c ARM: 7383/1: nommu: populate vectors page from paging_init 2012-04-13 14:05:42 +01:00
pabort-legacy.S
pabort-v6.S
pabort-v7.S
pgd.c
proc-arm7tdmi.S
proc-arm9tdmi.S
proc-arm720.S
proc-arm740.S
proc-arm920.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm922.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm925.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm926.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm940.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm946.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1020.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1020e.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1022.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1026.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-fa526.S
proc-feroceon.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-macros.S
proc-mohawk.S arm-soc: power management changes 2012-05-22 09:41:01 -07:00
proc-sa110.S
proc-sa1100.S
proc-syms.c
proc-v6.S ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process 2012-07-09 17:41:10 +01:00
proc-v7-2level.S ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process 2012-07-09 17:41:10 +01:00
proc-v7-3level.S
proc-v7.S ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE 2012-04-15 22:00:31 +01:00
proc-xsc3.S
proc-xscale.S
tlb-fa.S
tlb-v4.S
tlb-v4wb.S
tlb-v4wbi.S
tlb-v6.S
tlb-v7.S ARM: 7489/1: errata: fix workaround for erratum #720789 on UP systems 2012-08-11 09:16:00 +01:00
vmregion.c
vmregion.h ARM: dma-mapping: add support for IOMMU mapper 2012-05-21 15:06:23 +02:00