Commit 3254c876 authored Nov 10, 2011 by Miao Xie Committed by Chris Mason Nov 10, 2011

Btrfs: fix unreleased path in btrfs_orphan_cleanup()

When we did stress test for the space relocation, the deadlock happened.
By debugging, We found it was caused by the carelessness that we forgot
to unlock the read lock of the extent buffers in btrfs_orphan_cleanup()
before we end the transaction handle, so the transaction commit task waited
the task, which called btrfs_orphan_cleanup(), to unlock the extent buffer,
but that task waited the commit task to end the transaction commit, and
the deadlock happened. Fix it.

Signed-ff-by: Miao Xie <miaox@cn.fujitsu.com>

Signed-off-by: Chris Mason <chris.mason@oracle.com>

parent ba38eb4d

fs/btrfs/inode.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -2201,6 +2201,9 @@ int btrfs_orphan_cleanup(struct btrfs_root *root)
		if (ret)
		goto out;
		}
		/* release the path since we're done with it */
		btrfs_release_path(path);

		root->orphan_cleanup_state = ORPHAN_CLEANUP_DONE;

		if (root->orphan_block_rsv)

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