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vfs: don't kick vnlru if it is already running

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Further shaves some lock trips.
This commit is contained in:
Mateusz Guzik 2023-09-14 16:27:47 +00:00
parent b9c012a60b
commit 76f1153790
1 changed files with 4 additions and 2 deletions
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6
sys/kern/vfs_subr.c
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@ -1557,9 +1557,11 @@ vnlru_kick_locked(void)
}
static void
vnlru_kick(void)
vnlru_kick_cond(void)
{
if (vnlruproc_sig)
return;
mtx_lock(&vnode_list_mtx);
vnlru_kick_locked();
mtx_unlock(&vnode_list_mtx);
@ -1812,7 +1814,7 @@ alloc:
mtx_assert(&vnode_list_mtx, MA_NOTOWNED);
rnumvnodes = atomic_fetchadd_long(&numvnodes, 1) + 1;
if (vnlru_under(rnumvnodes, vlowat))
vnlru_kick();
vnlru_kick_cond();
return (uma_zalloc_smr(vnode_zone, M_WAITOK));
}