From: Evgeniy Dushistov <dushistov@mail.ru>
Date: Sat, 5 Aug 2006 19:13:55 +0000 (-0700)
Subject: [PATCH] ufs: ufs_get_locked_page() race fix
X-Git-Tag: v2.6.18-rc4~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1fb32b7bd8203d0175649a75ede3ee7634d6a941;p=pandora-kernel.git

[PATCH] ufs: ufs_get_locked_page() race fix

As discussed earlier:
http://lkml.org/lkml/2006/6/28/136
this patch fixes such issue:

`ufs_get_locked_page' takes page from cache
after that `vmtruncate' takes page and deletes it from cache
`ufs_get_locked_page' locks page, and reports about EIO error.

Also because of find_lock_page always return valid page or NULL, we have no
need to check it if page not NULL.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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