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Diffstat (limited to 'fs/btrfs/backref.h')
| -rw-r--r-- | fs/btrfs/backref.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h index a810253d7b8a..7220bde1fc31 100644 --- a/fs/btrfs/backref.h +++ b/fs/btrfs/backref.h @@ -318,6 +318,12 @@ struct btrfs_backref_node { u64 bytenr; }; /* Use rb_simple_node for search/insert */ + /* + * This is a sanity check, whenever we COW a block we will update + * new_bytenr with it's current location, and we will check this in + * various places to validate that the cache makes sense, it shouldn't + * be used for anything else. + */ u64 new_bytenr; /* Objectid of tree block owner, can be not uptodate */ u64 owner; |