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
..
boot	xtensa: change to new flag variable	2011-03-17 14:02:57 +01:00
configs	tokenring: delete all remaining driver support	2012-05-15 20:23:16 -04:00
include	cross-arch: don't corrupt personality flags upon exec()	2012-10-06 03:04:47 +09:00
kernel	PCI changes for the 3.7 merge window:	2012-10-01 12:05:36 -07:00
lib
mm	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
platforms	TTY: use tty_port_link_device	2012-08-13 16:50:19 -07:00
variants	xtensa: Change mail addresses of Hannes Weiner and Oskar Schirmer	2012-05-17 22:47:41 +02:00
Kconfig	xtensa: remove duplicate CONFIG_HOTPLUG definition	2012-09-06 13:26:16 -07:00
Kconfig.debug
Makefile	xtensa: use "test -e" instead of bashism "test -a"	2012-06-20 14:39:35 -07:00