Commit 06789384 authored Jul 06, 2012 by Liu Bo Committed by Chris Mason Jul 23, 2012

Btrfs: do not abort transaction in prealloc case



During disk balance, we prealloc new file extent for file data relocation,
but we may fail in 'no available space' case, and it leads to flipping btrfs
into readonly.

It is not necessary to bail out and abort transaction since we do have several
ways to rescue ourselves from ENOSPC case.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

parent 83eea1f1

fs/btrfs/extent-tree.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -5748,7 +5748,11 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
		ret = do_chunk_alloc(trans, root, num_bytes +
		2 * 1024 * 1024, data,
		CHUNK_ALLOC_LIMITED);
		if (ret < 0) {
		/*
		* Do not bail out on ENOSPC since we
		* can do more things.
		*/
		if (ret < 0 && ret != -ENOSPC) {
		btrfs_abort_transaction(trans,
		root, ret);
		goto out;