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btrfs: fix error pointer check in __btrfs_map_block() 

The btrfs_get_chunk_map() never returns NULL, it returns error pointers.

Fixes: 89b798ad1b ("btrfs: Use btrfs_get_io_geometry appropriately")
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Dan Carpenter 2019-08-09 17:07:39 +03:00 committed by David Sterba
parent 3b80a984d2
commit f11369897e
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/volumes.c
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@ -6023,7 +6023,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
return ret;
em = btrfs_get_chunk_map(fs_info, logical, *length);
ASSERT(em);
ASSERT(!IS_ERR(em));
map = em->map_lookup;
*length = geom.len;