tree 849e6aa148c69b9df3920199255ca14792eeffa2
parent 83c54070ee1a2d05c89793884bea1a03f2851ed4
author Nick Piggin <npiggin@suse.de> 1184834842 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1184864681 -0700

mm: fix clear_page_dirty_for_io vs fault race

Fix msync data loss and (less importantly) dirty page accounting
inaccuracies due to the race remaining in clear_page_dirty_for_io().

The deleted comment explains what the race was, and the added comments
explain how it is fixed.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>