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| author | Coly Li <colyli@suse.de> | 2019-06-28 14:59:56 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-06-28 16:39:17 +0300 |
| commit | 41508bb7d46b74dba631017e5a702a86caf1db8c (patch) | |
| tree | 72a7cc87407d048751e2ab6e676a3969f3b6caa4 /drivers/md/dm-bio-prison-v1.c | |
| parent | e5ec5f4765ada9c75fb3eee93a6e72f0e50599d5 (diff) | |
| download | linux-41508bb7d46b74dba631017e5a702a86caf1db8c.tar.xz | |
bcache: add comments for mutex_lock(&b->write_lock)
When accessing or modifying BTREE_NODE_dirty bit, it is not always
necessary to acquire b->write_lock. In bch_btree_cache_free() and
mca_reap() acquiring b->write_lock is necessary, and this patch adds
comments to explain why mutex_lock(&b->write_lock) is necessary for
checking or clearing BTREE_NODE_dirty bit there.
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/dm-bio-prison-v1.c')
0 files changed, 0 insertions, 0 deletions