Commit 962197ba authored Sep 11, 2012 by Miao Xie Committed by Chris Mason Oct 01, 2012

Btrfs: fix unnecessary warning when the fragments make the space alloc fail



When we wrote some data by compress mode into a btrfs filesystem which was full
of the fragments, the kernel will report:
	BTRFS warning (device xxx): Aborting unused transaction.

The reason is:
We can not find a long enough free space to store the compressed data because
of the fragmentary free space, and the compressed data can not be splited,
so the kernel outputed the above message.

In fact, btrfs can deal with this problem very well: it fall back to
uncompressed IO, split the uncompressed data into small ones, and then
store them into to the fragmentary free space. So we shouldn't output the
above warning message.

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

parent 69ffb543

fs/btrfs/inode.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -662,7 +662,7 @@ retry:
		async_extent->compressed_size,
		async_extent->compressed_size,
		0, alloc_hint, &ins, 1);
		if (ret)
		if (ret && ret != -ENOSPC)
		btrfs_abort_transaction(trans, root, ret);
		btrfs_end_transaction(trans, root);
		}

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