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
..
arch-v10	new helper: signal_delivered()	2012-06-01 12:58:52 -04:00
arch-v32	CRIS changes for 3.7	2012-10-03 07:36:36 -07:00
boot	Fix common misspellings	2011-03-31 11:26:23 -03:00
configs	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
include	cross-arch: don't corrupt personality flags upon exec()	2012-10-06 03:04:47 +09:00
kernel	cris: Add missing RCU idle APIs on idle loop	2012-09-23 07:44:44 -07:00
mm	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
Kconfig	Kconfig: clean up the long arch list for the UID16 config option	2012-10-09 16:22:13 +09:00
Kconfig.debug	Kconfig: remove a few puzzling comments	2011-10-31 10:58:48 +01:00
Makefile	UAPI: Partition the header include path sets and add uapi/ header directories	2012-10-02 18:01:26 +01:00