kernel_optimize_test/arch/mips/mm
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
..
c-octeon.c MIPS: Octeon: Use board_cache_error_setup for cache error handler setup. 2012-05-16 23:34:33 +02:00
c-r3k.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
c-r4k.c MIPS: Fix decoding of c0_config1 for MIPSxx caches with 32 ways per set. 2012-07-19 11:23:43 +02:00
c-tx39.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
cache.c MIPS: cache: Provide cache flush operations for XFS 2011-10-20 15:00:18 +01:00
cerr-sb1.c
cex-gen.S
cex-oct.S
cex-sb1.S Fix common misspellings 2011-03-31 11:26:23 -03:00
dma-default.c MIPS: adapt for dma_map_ops changes 2012-03-28 16:36:32 +02:00
extable.c
fault.c readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
gup.c MIPS: mm: Add compound tail page _mapcount when mapped 2012-08-27 16:10:21 +02:00
highmem.c highmem: kill all __kmap_atomic() 2012-03-20 21:48:30 +08:00
hugetlbpage.c
init.c mips: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
ioremap.c
Makefile MIPS: Refactor 'clear_page' and 'copy_page' functions. 2012-07-19 11:23:43 +02:00
mmap.c MIPS: Trivial style cleanups in mmap.c 2011-09-17 02:37:04 +02:00
page-funcs.S MIPS: Refactor 'clear_page' and 'copy_page' functions. 2012-07-19 11:23:43 +02:00
page.c MIPS: Refactor 'clear_page' and 'copy_page' functions. 2012-07-19 11:23:43 +02:00
pgtable-32.c MIPS: Limit fixrange_init() to the FIXMAP region 2011-07-25 17:26:54 +01:00
pgtable-64.c MIPS: Limit fixrange_init() to the FIXMAP region 2011-07-25 17:26:54 +01:00
sc-ip22.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
sc-mips.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
sc-r5k.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
sc-rm7k.c MIPS: RM7000: Symbol should be static 2010-10-04 18:33:54 +01:00
tlb-r3k.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
tlb-r4k.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
tlb-r8k.c Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
tlbex-fault.S
tlbex.c MIPS: Add support for the M14Kc core. 2012-07-06 23:56:00 +02:00
uasm.c MIPS: Fixup ordering of micro assembler instructions. 2012-07-23 13:55:56 +01:00