diff options
| -rw-r--r-- | fs/btrfs/subpage.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/subpage.h b/fs/btrfs/subpage.h index 3042c5ea840a..52546e0e97ce 100644 --- a/fs/btrfs/subpage.h +++ b/fs/btrfs/subpage.h @@ -33,8 +33,22 @@ enum { btrfs_bitmap_nr_uptodate = 0, btrfs_bitmap_nr_dirty, btrfs_bitmap_nr_writeback, + /* + * The ordered and checked flags are for COW fixup, already marked + * deprecated, and will be removed eventually. + */ btrfs_bitmap_nr_ordered, btrfs_bitmap_nr_checked, + + /* + * The locked bit is for async delalloc range (compression), currently + * async extent is queued with the range locked, until the compression + * is done. + * So an async extent can unlock the range at any random timing. + * + * This will need a rework on the async extent lifespan (mark writeback + * and do compression) before deprecating this flag. + */ btrfs_bitmap_nr_locked, btrfs_bitmap_nr_max }; |