diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-08-06 13:44:22 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-08-17 12:00:12 -0400 |
| commit | 11acf6ef3b58abd1c5eb94eaa38ed3b9dbc387f7 (patch) | |
| tree | 560ccca1947632495815d19ecfd8e81d1dc496d4 | |
| parent | bedd4b61a46d0398192a08fbe6821d1ac65aba84 (diff) | |
nfsd: Remove the cache_hash list
Now that the lru list is per-bucket, we don't need a second list for
searches.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/nfsd/cache.h | 1 | ||||
| -rw-r--r-- | fs/nfsd/nfscache.c | 19 |
2 files changed, 2 insertions, 18 deletions
diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h index b582f9ab6b2a..dd96a3830004 100644 --- a/fs/nfsd/cache.h +++ b/fs/nfsd/cache.h @@ -18,7 +18,6 @@ * is much larger than a sockaddr_in6. */ struct svc_cacherep { - struct hlist_node c_hash; struct list_head c_lru; unsigned char c_state, /* unused, inprog, done */ diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index c01f44eb7fe4..8abec475f80f 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -28,7 +28,6 @@ #define TARGET_BUCKET_SIZE 64 struct nfsd_drc_bucket { - struct hlist_head cache_hash; struct list_head lru_head; }; @@ -137,7 +136,6 @@ nfsd_reply_cache_alloc(void) rp->c_state = RC_UNUSED; rp->c_type = RC_NOCACHE; INIT_LIST_HEAD(&rp->c_lru); - INIT_HLIST_NODE(&rp->c_hash); } return rp; } @@ -149,8 +147,6 @@ nfsd_reply_cache_free_locked(struct svc_cacherep *rp) drc_mem_usage -= rp->c_replvec.iov_len; kfree(rp->c_replvec.iov_base); } - if (!hlist_unhashed(&rp->c_hash)) - hlist_del(&rp->c_hash); list_del(&rp->c_lru); --num_drc_entries; drc_mem_usage -= sizeof(*rp); @@ -233,16 +229,6 @@ lru_put_end(struct nfsd_drc_bucket *b, struct svc_cacherep *rp) schedule_delayed_work(&cache_cleaner, RC_EXPIRE); } -/* - * Move a cache entry from one hash list to another - */ -static void -hash_refile(struct nfsd_drc_bucket *b, struct svc_cacherep *rp) -{ - hlist_del_init(&rp->c_hash); - hlist_add_head(&rp->c_hash, &b->cache_hash); -} - static long prune_bucket(struct nfsd_drc_bucket *b) { @@ -386,10 +372,10 @@ nfsd_cache_search(struct nfsd_drc_bucket *b, struct svc_rqst *rqstp, __wsum csum) { struct svc_cacherep *rp, *ret = NULL; - struct hlist_head *rh = &b->cache_hash; + struct list_head *rh = &b->lru_head; unsigned int entries = 0; - hlist_for_each_entry(rp, rh, c_hash) { + list_for_each_entry(rp, rh, c_lru) { ++entries; if (nfsd_cache_match(rqstp, csum, rp)) { ret = rp; @@ -479,7 +465,6 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) rp->c_len = rqstp->rq_arg.len; rp->c_csum = csum; - hash_refile(b, rp); lru_put_end(b, rp); /* release any buffer */ |