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authorJunxiao Bi <junxiao.bi@oracle.com>2014-02-11 02:25:53 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-02-11 04:01:43 +0400
commitc7d2cbc364b2a237b0ed1bdd7cbf8a24c8a89dfd (patch)
tree660ee14df70bb80220b2e8c919b66f9f724890ef /include
parentd62e74be1270c89fbaf7aada8218bfdf62d00a58 (diff)
downloadlinux-c7d2cbc364b2a237b0ed1bdd7cbf8a24c8a89dfd.tar.xz
ocfs2: update inode size after zeroing the hole
fs-writeback will release the dirty pages without page lock whose offset are over inode size, the release happens at block_write_full_page_endio(). If not update, dirty pages in file holes may be released before flushed to the disk, then file holes will contain some non-zero data, this will cause sparse file md5sum error. To reproduce the bug, find a big sparse file with many holes, like vm image file, its actual size should be bigger than available mem size to make writeback work more frequently, tar it with -S option, then keep untar it and check its md5sum again and again until you get a wrong md5sum. Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Younger Liu <younger.liu@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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