diff options
| author | Brian Behlendorf <[email protected]> | 2010-08-26 11:00:46 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2010-08-31 08:38:49 -0700 |
| commit | 5fed499defe68b57fab349ac945a84416fb024ba (patch) | |
| tree | 42cec705699a7fd7159141dfcbc7096821201a68 /module | |
| parent | 47050a88ac1445f3557030d0d7e61b8a397a5476 (diff) | |
Fix stack vdev_cache_read()
Moving the vdev_cache_entry_t struct ve_search from the stack to
the heap saves ~100 bytes.
Signed-off-by: Brian Behlendorf <[email protected]>
Diffstat (limited to 'module')
| -rw-r--r-- | module/zfs/vdev_cache.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/module/zfs/vdev_cache.c b/module/zfs/vdev_cache.c index a4b34423a..c5439bacc 100644 --- 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) { |