diff options
| author | Filipe Manana <fdmanana@suse.com> | 2022-10-11 13:17:04 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-12-05 18:00:39 +0100 |
| commit | b629685803bc0cefbbd29240ea28d57d8a17bcbc (patch) | |
| tree | e344bf7703df90a54595612e0f9b6b3efcb8413d /fs/btrfs/backref.h | |
| parent | 84a7949d409753c90dc3477b8cfc18e983b09078 (diff) | |
btrfs: remove roots ulist when checking data extent sharedness
Currently btrfs_is_data_extent_shared() is passing a ulist for the roots
argument of find_parent_nodes(), however it does not use that ulist for
anything and for this context that list always ends up with at most one
element.
Since find_parent_nodes() is able to deal with a NULL ulist for its roots
argument, make btrfs_is_data_extent_shared() pass it NULL and avoid the
burden of allocating memory for the unnused roots ulist, initializing it,
releasing it and allocating one struct ulist_node for it during the call
to find_parent_nodes().
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/backref.h')
| -rw-r--r-- | fs/btrfs/backref.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h index 8da0ba6b94a4..5f468f0defda 100644 --- a/fs/btrfs/backref.h +++ b/fs/btrfs/backref.h @@ -26,7 +26,6 @@ struct btrfs_backref_shared_cache_entry { struct btrfs_backref_share_check_ctx { /* Ulists used during backref walking. */ struct ulist refs; - struct ulist roots; /* * 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. |