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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
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configs	Hexagon: Comet platform support	2011-11-01 07:34:21 -07:00
include	Merge branch 'uapi-prep' of git://git.infradead.org/users/dhowells/linux-headers	2012-10-07 07:55:10 +09:00
kernel	hexagon: SMP: Remove call to ipi_call_lock()/ipi_call_unlock()	2012-06-05 17:27:11 +02:00
lib	Hexagon: Add configuration and makefiles for the Hexagon architecture.	2011-11-01 07:34:21 -07:00
mm	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
Kconfig	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-05-24 13:29:46 -07:00
Makefile	various Kconfig cleanup and old platform build code removal	2012-05-22 18:44:43 -05:00