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Avoid taking the lock in selfdfree when not needed.

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This commit is contained in:
Mateusz Guzik 2014-10-23 15:35:47 +00:00
parent dc7b26971d
commit 73f2e5f759
1 changed files with 4 additions and 3 deletions
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7
sys/kern/sys_generic.c
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@ -1600,10 +1600,11 @@ static void
selfdfree(struct seltd *stp, struct selfd *sfp)
{
STAILQ_REMOVE(&stp->st_selq, sfp, selfd, sf_link);
mtx_lock(sfp->sf_mtx);
if (sfp->sf_si)
if (sfp->sf_si != NULL) {
mtx_lock(sfp->sf_mtx);
TAILQ_REMOVE(&sfp->sf_si->si_tdlist, sfp, sf_threads);
mtx_unlock(sfp->sf_mtx);
mtx_unlock(sfp->sf_mtx);
}
uma_zfree(selfd_zone, sfp);
}