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| author | Coly Li <colyli@suse.de> | 2023-11-20 13:25:02 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-20 15:32:35 +0100 |
| commit | 049d7fb74f871fdb46630381eb5016ebc8ad8bbd (patch) | |
| tree | d1c2db1186ad03ed03ffc11d9117a123217d0241 | |
| parent | a02316281851200b2e77adf42311075413afad72 (diff) | |
| download | linux-stable-049d7fb74f871fdb46630381eb5016ebc8ad8bbd.tar.gz linux-stable-049d7fb74f871fdb46630381eb5016ebc8ad8bbd.tar.bz2 linux-stable-049d7fb74f871fdb46630381eb5016ebc8ad8bbd.zip | |
bcache: add code comments for bch_btree_node_get() and __bch_btree_node_alloc()
[ Upstream commit 31f5b956a197d4ec25c8a07cb3a2ab69d0c0b82f ]
This patch adds code comments to bch_btree_node_get() and
__bch_btree_node_alloc() that NULL pointer will not be returned and it
is unnecessary to check NULL pointer by the callers of these routines.
Signed-off-by: Coly Li <colyli@suse.de>
Link: https://lore.kernel.org/r/20231120052503.6122-10-colyli@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/md/bcache/btree.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index 37ac4e846205..2a21bb28d969 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -972,6 +972,9 @@ err: * * The btree node will have either a read or a write lock held, depending on * level and op->lock. + * + * Note: Only error code or btree pointer will be returned, it is unncessary + * for callers to check NULL pointer. */ struct btree *bch_btree_node_get(struct cache_set *c, struct btree_op *op, struct bkey *k, int level, bool write, @@ -1070,6 +1073,10 @@ static void btree_node_free(struct btree *b) mutex_unlock(&b->c->bucket_lock); } +/* + * Only error code or btree pointer will be returned, it is unncessary for + * callers to check NULL pointer. + */ struct btree *__bch_btree_node_alloc(struct cache_set *c, struct btree_op *op, int level, bool wait, struct btree *parent) |