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| author |  Qu Wenruo <wqu@suse.com>
| 2020-03-03 13:21:30 +0800 |
|---|---|---|
| committer |  David Sterba <dsterba@suse.com>
| 2020-05-25 11:25:19 +0200 |
| commit | b1818dab9bda1da8f3ea5a13230b5d91ae964f00 (patch) | |
| tree | 4a314d9f7d44d391688e8463156f9b580c5caf4f /fs/btrfs/backref.c | |
| parent | btrfs: backref: rename and move backref_cache_init() (diff) | |
| download | linux-b1818dab9bda1da8f3ea5a13230b5d91ae964f00.tar.gz linux-b1818dab9bda1da8f3ea5a13230b5d91ae964f00.tar.bz2 linux-b1818dab9bda1da8f3ea5a13230b5d91ae964f00.zip | |
btrfs: backref: rename and move alloc_backref_node()
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/backref.c')
| -rw-r--r-- | fs/btrfs/backref.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 9c5097dcd5a3..dbe170de3516 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -2482,3 +2482,24 @@ void btrfs_backref_init_cache(struct btrfs_fs_info *fs_info, cache->fs_info = fs_info; cache->is_reloc = is_reloc; } + +struct btrfs_backref_node *btrfs_backref_alloc_node( + struct btrfs_backref_cache *cache, u64 bytenr, int level) +{ + struct btrfs_backref_node *node; + + ASSERT(level >= 0 && level < BTRFS_MAX_LEVEL); + node = kzalloc(sizeof(*node), GFP_NOFS); + if (!node) + return node; + + INIT_LIST_HEAD(&node->list); + INIT_LIST_HEAD(&node->upper); + INIT_LIST_HEAD(&node->lower); + RB_CLEAR_NODE(&node->rb_node); + cache->nr_nodes++; + node->level = level; + node->bytenr = bytenr; + + return node; +} |