btrfs: make btrfs_read_disk_super return struct btrfs_disk_super

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Instead of returning both the page and the super block structure, make
btrfs_read_disk_super just return a pointer to struct btrfs_disk_super.
As a result the function signature is simplified. Also,
read_cache_page_gfp can never return NULL so check its return value only
for IS_ERR.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Nikolay Borisov 2020-04-15 15:53:46 +03:00 • committed by David Sterba

parent a7571232b2

commit b335eab890

1 changed files with 23 additions and 24 deletions

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47

fs/btrfs/volumes.c

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