xfs: Fix leak of discard bio
authorJan Kara <jack@suse.cz>
Wed, 2 Aug 2017 19:37:16 +0000 (12:37 -0700)
committerDarrick J. Wong <darrick.wong@oracle.com>
Fri, 4 Aug 2017 20:43:36 +0000 (13:43 -0700)
commitea7bd56fa309d10a41b1041827a63c0746c47554
tree9b801f32954a0209ef4fcb7cd7df5300c53838bf
parent5b094d6dac0451ad89b1dc088395c7b399b7e9e8
xfs: Fix leak of discard bio

The bio describing discard operation is allocated by
__blkdev_issue_discard() which returns us a reference to it. That
reference is never released and thus we leak this bio. Drop the bio
reference once it completes in xlog_discard_endio().

CC: stable@vger.kernel.org
Fixes: 4560e78f40cb55bd2ea8f1ef4001c5baa88531c7
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
fs/xfs/xfs_log_cil.c