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
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fault.c	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
init.c	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
ioremap.c	OpenRISC: Memory management	2011-07-22 18:46:28 +02:00
Makefile	OpenRISC: Build infrastructure	2011-07-22 18:46:30 +02:00
tlb.c	Disintegrate asm/system.h for OpenRISC	2012-03-28 18:30:03 +01:00