OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

dlm: use kref_put_lock in put_rsb 

This patch will optimize put_rsb() 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>
This commit is contained in:
Alexander Aring 2022-05-02 11:14:09 -04:00 committed by David Teigland
parent 0ccc106052
commit 9502a7f688
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
fs/dlm/lock.c
View File

@ -350,10 +350,12 @@ static void put_rsb(struct dlm_rsb *r)
{
struct dlm_ls *ls = r->res_ls;
uint32_t bucket = r->res_bucket;
int rv;
spin_lock(&ls->ls_rsbtbl[bucket].lock);
kref_put(&r->res_ref, toss_rsb);
spin_unlock(&ls->ls_rsbtbl[bucket].lock);
rv = kref_put_lock(&r->res_ref, toss_rsb,
&ls->ls_rsbtbl[bucket].lock);
if (rv)
spin_unlock(&ls->ls_rsbtbl[bucket].lock);
}
void dlm_put_rsb(struct dlm_rsb *r)