From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Date: Thu, 6 Nov 2008 20:53:56 +0000 (-0800)
Subject: fat: Fix _fat_bmap() race
X-Git-Tag: v2.6.28-rc4~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fa93ca18a8b0da4e26bd9491ad144cd14d22f8ec;p=pandora-kernel.git

fat: Fix _fat_bmap() race

fat_get_cluster() assumes the requested blocknr isn't truncated during
read. _fat_bmap() doesn't follow this rule.

This protects it by ->i_mutex.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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