Add missing ZFS tunables

[zfs.git] / module / zfs / vdev_cache.c

diff --git a/module/zfs/vdev_cache.c b/module/zfs/vdev_cache.c
index a4b3442..0d1fe7d 100644 (file)
--- a/module/zfs/vdev_cache.c
+++ b/module/zfs/vdev_cache.c
@@ -244,7 +244,7 @@ int
 vdev_cache_read(zio_t *zio)
 {
        vdev_cache_t *vc = &zio->io_vd->vdev_cache;
-       vdev_cache_entry_t *ve, ve_search;
+       vdev_cache_entry_t *ve, *ve_search;
        uint64_t cache_offset = P2ALIGN(zio->io_offset, VCBS);
        ASSERTV(uint64_t cache_phase = P2PHASE(zio->io_offset, VCBS);)
        zio_t *fio;
@@ -267,8 +267,10 @@ vdev_cache_read(zio_t *zio)
 
        mutex_enter(&vc->vc_lock);
 
-       ve_search.ve_offset = cache_offset;
-       ve = avl_find(&vc->vc_offset_tree, &ve_search, NULL);
+       ve_search = kmem_alloc(sizeof(vdev_cache_entry_t), KM_SLEEP);
+       ve_search->ve_offset = cache_offset;
+       ve = avl_find(&vc->vc_offset_tree, ve_search, NULL);
+       kmem_free(ve_search, sizeof(vdev_cache_entry_t));
 
        if (ve != NULL) {
                if (ve->ve_missed_update) {
@@ -414,3 +416,14 @@ vdev_cache_stat_fini(void)
                vdc_ksp = NULL;
        }
 }
+
+#if defined(_KERNEL) && defined(HAVE_SPL)
+module_param(zfs_vdev_cache_max, int, 0644);
+MODULE_PARM_DESC(zfs_vdev_cache_max, "Inflate reads small than max");
+
+module_param(zfs_vdev_cache_size, int, 0444);
+MODULE_PARM_DESC(zfs_vdev_cache_size, "Total size of the per-disk cache");
+
+module_param(zfs_vdev_cache_bshift, int, 0644);
+MODULE_PARM_DESC(zfs_vdev_cache_bshift, "Shift size to inflate reads too");
+#endif