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authorTheodore Ts'o <tytso@mit.edu>2012-12-27 01:42:48 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-17 08:43:57 -0800
commita4202fd727f6bf57827061104a60307e78124ea2 (patch)
tree5187952c75fb02b48114638eaba8e419c8ce9e5b /COPYING
parent1ba9a27ec24b133799bc1b8a77d733c4015d0abd (diff)
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ext4: lock i_mutex when truncating orphan inodes
commit 721e3eba21e43532e438652dd8f1fcdfce3187e7 upstream. Commit c278531d39 added a warning when ext4_flush_unwritten_io() is called without i_mutex being taken. It had previously not been taken during orphan cleanup since races weren't possible at that point in the mount process, but as a result of this c278531d39, we will now see a kernel WARN_ON in this case. Take the i_mutex in ext4_orphan_cleanup() to suppress this warning. Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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