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authorJeff Layton <jlayton@redhat.com>2013-01-28 14:41:11 -0500
committerJ. Bruce Fields <bfields@redhat.com>2013-02-04 09:16:22 -0500
commitf09841fdfad8dd95593725dfa70388f55b170947 (patch)
tree13154119afdf6df40317ea265512e3c1a8fcc984 /fs/nfsd/nfscache.c
parent8a8bc40d9ba0890f88dbf7a7c8fa81ddc77c08e3 (diff)
downloadop-kernel-dev-f09841fdfad8dd95593725dfa70388f55b170947.zip
op-kernel-dev-f09841fdfad8dd95593725dfa70388f55b170947.tar.gz
nfsd: add alloc and free functions for DRC entries
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfscache.c')
-rw-r--r--fs/nfsd/nfscache.c36
1 files changed, 27 insertions, 9 deletions
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 4aad9e4..363bc61 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -47,10 +47,34 @@ static int nfsd_cache_append(struct svc_rqst *rqstp, struct kvec *vec);
*/
static DEFINE_SPINLOCK(cache_lock);
-int nfsd_reply_cache_init(void)
+static struct svc_cacherep *
+nfsd_reply_cache_alloc(void)
{
struct svc_cacherep *rp;
+
+ rp = kmem_cache_alloc(drc_slab, GFP_KERNEL);
+ if (rp) {
+ rp->c_state = RC_UNUSED;
+ rp->c_type = RC_NOCACHE;
+ INIT_LIST_HEAD(&rp->c_lru);
+ INIT_HLIST_NODE(&rp->c_hash);
+ }
+ return rp;
+}
+
+static void
+nfsd_reply_cache_free_locked(struct svc_cacherep *rp)
+{
+ if (rp->c_state == RC_DONE && rp->c_type == RC_REPLBUFF)
+ kfree(rp->c_replvec.iov_base);
+ list_del(&rp->c_lru);
+ kmem_cache_free(drc_slab, rp);
+}
+
+int nfsd_reply_cache_init(void)
+{
int i;
+ struct svc_cacherep *rp;
drc_slab = kmem_cache_create("nfsd_drc", sizeof(struct svc_cacherep),
0, 0, NULL);
@@ -60,13 +84,10 @@ int nfsd_reply_cache_init(void)
INIT_LIST_HEAD(&lru_head);
i = CACHESIZE;
while (i) {
- rp = kmem_cache_alloc(drc_slab, GFP_KERNEL);
+ rp = nfsd_reply_cache_alloc();
if (!rp)
goto out_nomem;
list_add(&rp->c_lru, &lru_head);
- rp->c_state = RC_UNUSED;
- rp->c_type = RC_NOCACHE;
- INIT_HLIST_NODE(&rp->c_hash);
i--;
}
@@ -88,10 +109,7 @@ void nfsd_reply_cache_shutdown(void)
while (!list_empty(&lru_head)) {
rp = list_entry(lru_head.next, struct svc_cacherep, c_lru);
- if (rp->c_state == RC_DONE && rp->c_type == RC_REPLBUFF)
- kfree(rp->c_replvec.iov_base);
- list_del(&rp->c_lru);
- kmem_cache_free(drc_slab, rp);
+ nfsd_reply_cache_free_locked(rp);
}
cache_disabled = 1;
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