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fa93ca18a8
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>