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lockf: perform wakeup onlly when there is anybody waiting

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Tested by:      pho
This commit is contained in:
Mateusz Guzik 2018-04-23 07:52:56 +00:00
parent c72ead2815
commit 717df0b0e8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=332880
1 changed files with 2 additions and 1 deletions
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3
sys/kern/kern_lockf.c
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@ -724,10 +724,11 @@ lf_advlockasync(struct vop_advlockasync_args *ap, struct lockf **statep,
VI_LOCK(vp);
state->ls_threads--;
wakeup(state);
if (LIST_EMPTY(&state->ls_active) && state->ls_threads == 0) {
KASSERT(LIST_EMPTY(&state->ls_pending),
("freeable state with pending locks"));
} else {
wakeup(state);
}
VI_UNLOCK(vp);