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authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>2008-11-06 23:53:57 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-07 02:41:21 +0300
commit2bdf67eb1631f30e2f3f5d49e4007c76e88877a8 (patch)
treed3d337e52516b3b61cdf4508cf445ef8dcaae2ed /fs/fat/dir.c
parent0e75f5da06c05425f4b375eb981c4489fb2d9787 (diff)
downloadlinux-2bdf67eb1631f30e2f3f5d49e4007c76e88877a8.tar.xz
fat: mmu_private race fix
mmu_private is 64bits value, hence it's not atomic to update. So, the access rule for mmu_private is we must hold ->i_mutex. But, fat_get_block() path doesn't follow the rule on non-allocation path. This fixes by using i_size instead if non-allocation path. 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>
Diffstat (limited to 'fs/fat/dir.c')
-rw-r--r--fs/fat/dir.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 140fc39e2307..2ecaa17acdb5 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -77,7 +77,7 @@ next:
*bh = NULL;
iblock = *pos >> sb->s_blocksize_bits;
- err = fat_bmap(dir, iblock, &phys, &mapped_blocks);
+ err = fat_bmap(dir, iblock, &phys, &mapped_blocks, 0);
if (err || !phys)
return -1; /* beyond EOF or error */