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btrfs: don't force read-only after error in drop snapshot

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[ Upstream commit 7c09c03091 ]

Deleting a subvolume on a full filesystem leads to ENOSPC followed by a
forced read-only. This is not a transaction abort and the filesystem is
otherwise ok, so the error should be just propagated to the callers.

This is caused by unnecessary call to btrfs_handle_fs_error for all
errors, except EAGAIN. This does not make sense as the standard
transaction abort mechanism is in btrfs_drop_snapshot so all relevant
failures are handled.

Originally in commit cb1b69f450 ("Btrfs: forced readonly when
btrfs_drop_snapshot() fails") there was no return value at all, so the
btrfs_std_error made some sense but once the error handling and
propagation has been implemented we don't need it anymore.

Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
David Sterba
2020-02-25 15:05:53 +01:00
committed by Greg Kroah-Hartman
parent d8593121de
commit 2b8c5a91f9
1 changed files with 0 additions and 2 deletions
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2
fs/btrfs/extent-tree.c
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@@ -9435,8 +9435,6 @@ out:
*/
if (!for_reloc && root_dropped == false)
btrfs_add_dead_root(root);
if (err && err != -EAGAIN)
btrfs_handle_fs_error(fs_info, err, NULL);
return err;
}