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authorJan Kara <jack@suse.cz>2012-12-05 14:40:14 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-20 13:57:36 -0500
commit72651cac884b1e285fa8e8314b10e9f1b8458802 (patch)
tree8872407cd5c36f52054c18f11b7b8470dccb1d6e /fs/ufs
parent39e3c9553f34381a1b664c27b0c696a266a5735e (diff)
fs: Fix imbalance in freeze protection in mark_files_ro()
File descriptors (even those for writing) do not hold freeze protection. Thus mark_files_ro() must call __mnt_drop_write() to only drop protection against remount read-only. Calling mnt_drop_write_file() as we do now results in: [ BUG: bad unlock balance detected! ] 3.7.0-rc6-00028-g88e75b6 #101 Not tainted ------------------------------------- kworker/1:2/79 is trying to release lock (sb_writers) at: [<ffffffff811b33b4>] mnt_drop_write+0x24/0x30 but there are no more locks to release! Reported-by: Zdenek Kabelac <zkabelac@redhat.com> CC: stable@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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