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Btrfs: fix up read_tree_block to return proper error

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The return value of read_tree_block() can confuse callers as it always
returns NULL for either -ENOMEM or -EIO, so it's likely that callers
parse it to a wrong error, for instance, in btrfs_read_tree_root().

This fixes the above issue.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Liu Bo 2015-05-25 17:30:15 +08:00 • committed by Chris Mason
commit 64c043de46
5 changed files with 54 additions and 29 deletions
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