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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
..
alchemy MIPS: MTX-1: Add udelay to mtx1_pci_idsel 2012-08-17 10:57:27 +02:00
ar7 arch: Use eth_random_addr 2012-07-16 22:39:25 -07:00
ath79 MIPS: ath79: Use correct IRQ number for the OHCI controller on AR7240 2012-08-17 10:57:27 +02:00
bcm47xx MIPS: BCM47xx: Fix BCMA_DRIVER_PCI_HOSTMODE config dependencies 2012-07-19 11:23:43 +02:00
bcm63xx sections: fix section conflicts in arch/mips 2012-10-06 03:04:39 +09:00
boot MIPS: Enable vmlinuz for JZ4740 2012-07-23 13:56:21 +01:00
cavium-octeon Merge 3.6-rc6 into tty-next 2012-09-16 17:31:36 -07:00
cobalt MIPS: Mark cascade and low level interrupts IRQF_NO_THREAD 2011-09-21 17:52:15 +02:00
configs netfilter: remove xt_NOTRACK 2012-09-03 13:36:40 +02:00
dec MIPS: DEC: use IS_ENABLED() 2012-07-23 13:55:54 +01:00
emma Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
fw MIPS: Remove all -Wall and almost all -Werror usage from arch/mips. 2012-05-21 15:09:36 +01:00
include mm: hugetlb: add arch hook for clearing page flags before entering pool 2012-10-09 16:22:24 +09:00
jazz Merge branch 'next/generic' into mips-for-linux-next 2012-01-11 15:41:47 +01:00
jz4740 MIPS: JZ4740: reset: Initialize hibernate wakeup counters. 2012-07-23 13:56:20 +01:00
kernel Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2012-10-08 07:56:10 +09:00
lantiq MIPS: Lantiq: Platform specific CLK fixup 2012-08-01 17:58:09 +02:00
lasat Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
lib MIPS: Unify memcpy.S and memcpy-inatomic.S 2012-07-23 13:55:55 +01:00
loongson MIPS: Loongson 2: Sort out clock managment. 2012-08-01 18:10:06 +02:00
loongson1 MIPS: Loongson 1: more clk support and add select HAVE_CLK 2012-08-01 17:59:23 +02:00
math-emu Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
mipssim Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
mm readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
mti-malta Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2012-09-22 12:47:53 -07:00
netlogic Merge branches 'next/generic', 'next/alchemy', 'next/bcm63xx', 'next/cavium', 'next/jz4740', 'next/lantiq', 'next/loongson1b' and 'next/netlogic' into mips-for-linux-next 2012-07-25 16:37:46 +02:00
oprofile Merge branches 'next/generic', 'next/alchemy', 'next/bcm63xx', 'next/cavium', 'next/jz4740', 'next/lantiq', 'next/loongson1b' and 'next/netlogic' into mips-for-linux-next 2012-07-25 16:37:46 +02:00
pci sections: fix section conflicts in arch/mips 2012-10-06 03:04:39 +09:00
pmc-sierra PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
pnx833x MIPS: PNX833x: use IS_ENABLED() macro 2012-07-23 13:55:53 +01:00
pnx8550 MIPS: irq: Remove IRQF_DISABLED 2011-12-07 22:03:45 +00:00
power MIPS: Hibernation: Fixes for PAGE_SIZE >= 64kb 2011-05-10 18:15:26 +01:00
powertv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-07-24 10:01:50 -07:00
rb532 - More robust parsing especially of xattr data in JFFS2 2012-06-01 16:55:42 -07:00
sgi-ip22 Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
sgi-ip27 mips: zero out pg_data_t when it's allocated 2012-07-31 18:42:49 -07:00
sgi-ip32 Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
sibyte documentation: remove references to cpu_*_map. 2012-03-29 15:38:31 +10:30
sni serial: Add note about migration to driver SCCNXP 2012-09-05 13:24:40 -07:00
txx9 MIPS: txx9: Fix redefinition of clk_* by adding select HAVE_CLK 2012-08-01 17:59:15 +02:00
vr41xx Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
wrppmc
…
Kbuild MIPS: Repair Kbuild make clean breakage. 2010-10-19 18:32:39 +01:00
Kbuild.platforms MIPS: Loongson 1B: Add board support 2012-07-25 16:17:24 +02:00
Kconfig Kconfig: clean up the long arch list for the DEBUG_KMEMLEAK config option 2012-10-09 16:22:14 +09:00
Kconfig.debug Fix typo in various Kconfig file 2012-04-16 14:40:08 +02:00
Makefile kbuild: Fix gcc -x syntax 2012-10-03 09:03:24 +02:00