aboutsummaryrefslogtreecommitdiff
path: root/drivers/md
diff options
context:
space:
mode:
authorColy Li <colyli@suse.de>2019-04-25 00:48:39 +0800
committerJens Axboe <axboe@kernel.dk>2019-04-24 10:56:28 -0600
commit63d63b51d70fb5155754dcf0baa2c1700bcafcb0 (patch)
treedf2e71a03a0c6b630949ec75daea7bc39445d6af /drivers/md
parentbb6d355c2aff42d4075a8e7428dd72cb009d6143 (diff)
downloadlinux-63d63b51d70fb5155754dcf0baa2c1700bcafcb0.tar.gz
bcache: add comments for closure_fn to be called in closure_queue()
Add code comments to explain which call back function might be called for the closure_queue(). This is an effort to make code to be more understandable for readers. Signed-off-by: Coly Li <colyli@suse.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/bcache/super.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index fa856b2ca7af..0363ab534c8e 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -662,6 +662,11 @@ static const struct block_device_operations bcache_ops = {
void bcache_device_stop(struct bcache_device *d)
{
if (!test_and_set_bit(BCACHE_DEV_CLOSING, &d->flags))
+ /*
+ * closure_fn set to
+ * - cached device: cached_dev_flush()
+ * - flash dev: flash_dev_flush()
+ */
closure_queue(&d->cl);
}
@@ -1675,6 +1680,7 @@ static void __cache_set_unregister(struct closure *cl)
void bch_cache_set_stop(struct cache_set *c)
{
if (!test_and_set_bit(CACHE_SET_STOPPING, &c->flags))
+ /* closure_fn set to __cache_set_unregister() */
closure_queue(&c->caching);
}