diff options
Diffstat (limited to 'fs/btrfs/subpage.h')
| -rw-r--r-- | fs/btrfs/subpage.h | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/fs/btrfs/subpage.h b/fs/btrfs/subpage.h index 386246a7770f..ac4dd64ed257 100644 --- a/fs/btrfs/subpage.h +++ b/fs/btrfs/subpage.h @@ -6,12 +6,6 @@ #include <linux/spinlock.h> /* - * Maximum page size we support is 64K, minimum sector size is 4K, u16 bitmap - * is sufficient. Regular bitmap_* is not used due to size reasons. - */ -#define BTRFS_SUBPAGE_BITMAP_SIZE 16 - -/* * Extra info for subpapge bitmap. * * For subpage we pack all uptodate/error/dirty/writeback/ordered bitmaps into @@ -51,10 +45,6 @@ struct btrfs_subpage_info { struct btrfs_subpage { /* Common members for both data and metadata pages */ spinlock_t lock; - u16 uptodate_bitmap; - u16 error_bitmap; - u16 dirty_bitmap; - u16 writeback_bitmap; /* * Both data and metadata needs to track how many readers are for the * page. @@ -71,14 +61,11 @@ struct btrfs_subpage { * manages whether the subpage can be detached. */ atomic_t eb_refs; - /* Structures only used by data */ - struct { - atomic_t writers; - /* Tracke pending ordered extent in this sector */ - u16 ordered_bitmap; - }; + /* Structures only used by data */ + atomic_t writers; }; + unsigned long bitmaps[]; }; enum btrfs_subpage_type { |