diff options
Diffstat (limited to 'fs/btrfs/backref.h')
| -rw-r--r-- | fs/btrfs/backref.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h index fda78db50be6..6dac462430b0 100644 --- a/fs/btrfs/backref.h +++ b/fs/btrfs/backref.h @@ -29,6 +29,19 @@ struct btrfs_backref_share_check_ctx { /* Ulists used during backref walking. */ struct ulist refs; /* + * The current leaf the caller of btrfs_is_data_extent_shared() is at. + * Typically the caller (at the moment only fiemap) tries to determine + * the sharedness of data extents point by file extent items from entire + * leaves. + */ + u64 curr_leaf_bytenr; + /* + * The previous leaf the caller was at in the previous call to + * btrfs_is_data_extent_shared(). This may be the same as the current + * leaf. On the first call it must be 0. + */ + u64 prev_leaf_bytenr; + /* * A path from a root to a leaf that has a file extent item pointing to * a given data extent should never exceed the maximum b+tree height. */ |