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authorJeff Layton <jlayton@redhat.com>2013-02-04 08:18:01 -0500
committerJ. Bruce Fields <bfields@redhat.com>2013-02-04 17:19:09 -0500
commit0ee0bf7ee5b55f232b645c4af0b0c37d4e115a32 (patch)
tree1d27db3b3f93d4fc257d70a960d33129d9cf6d93 /fs/nfsd
parent56c2548b2d24de440868885e4c36c985eca2d083 (diff)
nfsd: track the number of DRC entries in the cache
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfscache.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 9d80dfa7778e..c0c58471eb45 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -27,6 +27,7 @@ static struct hlist_head * cache_hash;
static struct list_head lru_head;
static int cache_disabled = 1;
static struct kmem_cache *drc_slab;
+static unsigned int num_drc_entries;
/*
* Calculate the hash index from an XID.
@@ -68,6 +69,7 @@ nfsd_reply_cache_free_locked(struct svc_cacherep *rp)
if (rp->c_type == RC_REPLBUFF)
kfree(rp->c_replvec.iov_base);
list_del(&rp->c_lru);
+ --num_drc_entries;
kmem_cache_free(drc_slab, rp);
}
@@ -83,10 +85,12 @@ int nfsd_reply_cache_init(void)
INIT_LIST_HEAD(&lru_head);
i = CACHESIZE;
+ num_drc_entries = 0;
while (i) {
rp = nfsd_reply_cache_alloc();
if (!rp)
goto out_nomem;
+ ++num_drc_entries;
list_add(&rp->c_lru, &lru_head);
i--;
}