diff options
| author | Alexander Aring <aahringo@redhat.com> | 2022-05-02 11:14:10 -0400 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2022-05-02 11:23:49 -0500 |
| commit | 8e51ec6146fdec82f7308f89113497631013f16a (patch) | |
| tree | b2ca657b32bb99488d760c16832ca5c9f909550a /fs/dlm | |
| parent | 9502a7f688fe7bff297b4e1b64622e0da9b27d78 (diff) | |
| download | linux-stable-8e51ec6146fdec82f7308f89113497631013f16a.tar.gz linux-stable-8e51ec6146fdec82f7308f89113497631013f16a.tar.bz2 linux-stable-8e51ec6146fdec82f7308f89113497631013f16a.zip | |
dlm: use kref_put_lock in __put_lkb
This patch will optimize __put_lkb() by using kref_put_lock(). The
function kref_put_lock() will only take the lock if the reference is
going to be zero, if not the lock will never be held.
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm')
| -rw-r--r-- | fs/dlm/lock.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index a331210434b2..226822f49d30 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -1268,9 +1268,11 @@ static void kill_lkb(struct kref *kref) static int __put_lkb(struct dlm_ls *ls, struct dlm_lkb *lkb) { uint32_t lkid = lkb->lkb_id; + int rv; - spin_lock(&ls->ls_lkbidr_spin); - if (kref_put(&lkb->lkb_ref, kill_lkb)) { + rv = kref_put_lock(&lkb->lkb_ref, kill_lkb, + &ls->ls_lkbidr_spin); + if (rv) { idr_remove(&ls->ls_lkbidr, lkid); spin_unlock(&ls->ls_lkbidr_spin); @@ -1280,11 +1282,9 @@ static int __put_lkb(struct dlm_ls *ls, struct dlm_lkb *lkb) if (lkb->lkb_lvbptr && is_master_copy(lkb)) dlm_free_lvb(lkb->lkb_lvbptr); dlm_free_lkb(lkb); - return 1; - } else { - spin_unlock(&ls->ls_lkbidr_spin); - return 0; } + + return rv; } int dlm_put_lkb(struct dlm_lkb *lkb) |