diff options
author | Coly Li <colyli@suse.de> | 2020-10-01 14:50:53 +0800 |
---|---|---|
committer | Jens Axboe <axboe@kernel.dk> | 2020-10-02 14:25:30 -0600 |
commit | 08a17828812adbe965b7af9a0e3e6a6024460cc8 (patch) | |
tree | 68556546380cdd9732550e9024e44ba559896ef6 /drivers/md | |
parent | 63a96c05cd43ccf66cb671af039c7931a840efe8 (diff) | |
download | linux-08a17828812adbe965b7af9a0e3e6a6024460cc8.tar.bz2 |
bcache: don't check seq numbers in register_cache_set()
In order to update the partial super block of cache set, the seq numbers
of cache and cache set are checked in register_cache_set(). If cache's
seq number is larger than cache set's seq number, cache set must update
its partial super block from cache's super block. It is unncessary when
the embedded struct cache_sb is removed from struct cache set.
This patch removed the seq numbers checking from register_cache_set(),
because later there will be no such partial super block in struct cache
set, the cache set will directly reference in-memory super block from
struct cache. This is a preparation patch for removing embedded struct
cache_sb from struct cache_set.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md')
-rw-r--r-- | drivers/md/bcache/super.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 3a79790f5fab..291a3d4a4591 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -2175,21 +2175,6 @@ found: sysfs_create_link(&c->kobj, &ca->kobj, buf)) goto err; - /* - * A special case is both ca->sb.seq and c->sb.seq are 0, - * such condition happens on a new created cache device whose - * super block is never flushed yet. In this case c->sb.version - * and other members should be updated too, otherwise we will - * have a mistaken super block version in cache set. - */ - if (ca->sb.seq > c->sb.seq || c->sb.seq == 0) { - c->sb.version = ca->sb.version; - memcpy(c->set_uuid, ca->sb.set_uuid, 16); - c->sb.flags = ca->sb.flags; - c->sb.seq = ca->sb.seq; - pr_debug("set version = %llu\n", c->sb.version); - } - kobject_get(&ca->kobj); ca->set = c; ca->set->cache = ca; |