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btrfs: stop checking for NULL return from btrfs_get_extent_fiemap()

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In get_extent_skip_holes() we're checking the return of
btrfs_get_extent_fiemap() for an error pointer or NULL, but
btrfs_get_extent_fiemap() will never return NULL, only error pointers or
a valid extent_map.

The other caller of btrfs_get_extent_fiemap(), find_desired_extent(),
correctly only checks for error-pointers.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2022-02-04 04:06:27 -08:00 committed by David Sterba
parent f716fa4798
commit 6b5b7a41d0
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent_io.c
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@ -5390,7 +5390,7 @@ static struct extent_map *get_extent_skip_holes(struct btrfs_inode *inode,
break;
len = ALIGN(len, sectorsize);
em = btrfs_get_extent_fiemap(inode, offset, len);
if (IS_ERR_OR_NULL(em))
if (IS_ERR(em))
return em;
/* if this isn't a hole return it */