Function nchinit

freebsd/kern/vfs_cache.c:2517–2560

* Name cache initialization, from vfs_init() when we are booting */

 * Name cache initialization, from vfs_init() when we are booting
 */
static void
nchinit(void *dummy __unused)
{
	u_int i;

	cache_zone_small = uma_zcreate("S VFS Cache", CACHE_ZONE_SMALL_SIZE,
	    NULL, NULL, NULL, NULL, CACHE_ZONE_ALIGNMENT, UMA_ZONE_ZINIT);
	cache_zone_small_ts = uma_zcreate("STS VFS Cache", CACHE_ZONE_SMALL_TS_SIZE,
	    NULL, NULL, NULL, NULL, CACHE_ZONE_ALIGNMENT, UMA_ZONE_ZINIT);
	cache_zone_large = uma_zcreate("L VFS Cache", CACHE_ZONE_LARGE_SIZE,
	    NULL, NULL, NULL, NULL, CACHE_ZONE_ALIGNMENT, UMA_ZONE_ZINIT);
	cache_zone_large_ts = uma_zcreate("LTS VFS Cache", CACHE_ZONE_LARGE_TS_SIZE,
	    NULL, NULL, NULL, NULL, CACHE_ZONE_ALIGNMENT, UMA_ZONE_ZINIT);

	VFS_SMR_ZONE_SET(cache_zone_small);
	VFS_SMR_ZONE_SET(cache_zone_small_ts);
	VFS_SMR_ZONE_SET(cache_zone_large);
	VFS_SMR_ZONE_SET(cache_zone_large_ts);

	ncsize = desiredvnodes * ncsizefactor;
	cache_recalc_neg_min(ncnegminpct);
	nchashtbl = nchinittbl(desiredvnodes * 2, &nchash);
	ncbuckethash = cache_roundup_2(mp_ncpus * mp_ncpus) - 1;
	if (ncbuckethash < 7) /* arbitrarily chosen to avoid having one lock */
		ncbuckethash = 7;
	if (ncbuckethash > nchash)
		ncbuckethash = nchash;
	bucketlocks = malloc(sizeof(*bucketlocks) * numbucketlocks, M_VFSCACHE,
	    M_WAITOK | M_ZERO);
	for (i = 0; i < numbucketlocks; i++)
		mtx_init(&bucketlocks[i], "ncbuc", NULL, MTX_DUPOK | MTX_RECURSE);
	ncvnodehash = ncbuckethash;
	vnodelocks = malloc(sizeof(*vnodelocks) * numvnodelocks, M_VFSCACHE,
	    M_WAITOK | M_ZERO);
	for (i = 0; i < numvnodelocks; i++)
		mtx_init(&vnodelocks[i], "ncvn", NULL, MTX_DUPOK | MTX_RECURSE);

	for (i = 0; i < numneglists; i++) {
		mtx_init(&neglists[i].nl_evict_lock, "ncnege", NULL, MTX_DEF);
		mtx_init(&neglists[i].nl_lock, "ncnegl", NULL, MTX_DEF);
		TAILQ_INIT(&neglists[i].nl_list);
		TAILQ_INIT(&neglists[i].nl_hotlist);
	}
}
SYSINIT(vfs, SI_SUB_VFS, SI_ORDER_SECOND, nchinit, NULL);

void