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
..
cache.c	Hexagon: Implement basic cache-flush support	2011-11-01 07:34:20 -07:00
copy_from_user.S	Hexagon: Add user access functions	2011-11-01 07:34:20 -07:00
copy_to_user.S	Hexagon: Add user access functions	2011-11-01 07:34:20 -07:00
copy_user_template.S	Hexagon: Add user access functions	2011-11-01 07:34:20 -07:00
init.c	Hexagon: Add page-fault support.	2011-11-01 07:34:20 -07:00
ioremap.c	Hexagon: Add ioremap support	2011-11-01 07:34:20 -07:00
Makefile	Hexagon: Add configuration and makefiles for the Hexagon architecture.	2011-11-01 07:34:21 -07:00
pgalloc.c	Hexagon: Add page table header files & etc.	2011-11-01 07:34:20 -07:00
strnlen_user.S	Hexagon: Add user access functions	2011-11-01 07:34:20 -07:00
uaccess.c	Hexagon: Add user access functions	2011-11-01 07:34:20 -07:00
vm_fault.c	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
vm_tlb.c	Hexagon: Implement basic TLB management routines for Hexagon.	2011-11-01 07:34:20 -07:00