diff options
| author | Jeff Mahoney <jeffm@suse.com> | 2015-06-03 10:55:48 -0400 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-01-15 19:22:28 +0100 |
| commit | 95617d69326ce386c95e33db7aeb832b45ee9f8f (patch) | |
| tree | 58b636c69bee4179da9b70fe66d448cf3605c1f0 /fs/btrfs/extent_map.h | |
| parent | a7ca42256d9fad572fb7f2c471514d7d3572b1db (diff) | |
btrfs: cleanup, stop casting for extent_map->lookup everywhere
Overloading extent_map->bdev to struct map_lookup * might have started out
as a means to an end, but it's a pattern that's used all over the place
now. Let's get rid of the casting and just add a union instead.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent_map.h')
| -rw-r--r-- | fs/btrfs/extent_map.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index b2991fd8583e..eb8b8fae036b 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -32,7 +32,15 @@ struct extent_map { u64 block_len; u64 generation; unsigned long flags; - struct block_device *bdev; + union { + struct block_device *bdev; + + /* + * used for chunk mappings + * flags & EXTENT_FLAG_FS_MAPPING must be set + */ + struct map_lookup *map_lookup; + }; atomic_t refs; unsigned int compress_type; struct list_head list; |