libceph: use slab cache for osd client requests

[karo-tx-linux.git] / net / ceph / osd_client.c

diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 57d8db5b055a9fe3663ac374c474ff0a3f875444..a3395fdfbd4f6345cdf3bd3a12ebdc1d7f26ecbb 100644 (file)
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -22,6 +22,8 @@
 #define OSD_OP_FRONT_LEN       4096
 #define OSD_OPREPLY_FRONT_LEN  512
 
+static struct kmem_cache       *ceph_osd_request_cache;
+
 static const struct ceph_connection_operations osd_con_ops;
 
 static void __send_queued(struct ceph_osd_client *osdc);
@@ -315,7 +317,8 @@ void ceph_osdc_release_request(struct kref *kref)
        if (req->r_mempool)
                mempool_free(req, req->r_osdc->req_mempool);
        else
-               kfree(req);
+               kmem_cache_free(ceph_osd_request_cache, req);
+
 }
 EXPORT_SYMBOL(ceph_osdc_release_request);
 
@@ -346,7 +349,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
                req = mempool_alloc(osdc->req_mempool, gfp_flags);
                memset(req, 0, sizeof(*req));
        } else {
-               req = kzalloc(sizeof(*req), gfp_flags);
+               req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags);
        }
        if (req == NULL)
                return NULL;
@@ -2365,6 +2368,26 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
 }
 EXPORT_SYMBOL(ceph_osdc_writepages);
 
+int ceph_osdc_setup(void)
+{
+       BUG_ON(ceph_osd_request_cache);
+       ceph_osd_request_cache = kmem_cache_create("ceph_osd_request",
+                                       sizeof (struct ceph_osd_request),
+                                       __alignof__(struct ceph_osd_request),
+                                       0, NULL);
+
+       return ceph_osd_request_cache ? 0 : -ENOMEM;
+}
+EXPORT_SYMBOL(ceph_osdc_setup);
+
+void ceph_osdc_cleanup(void)
+{
+       BUG_ON(!ceph_osd_request_cache);
+       kmem_cache_destroy(ceph_osd_request_cache);
+       ceph_osd_request_cache = NULL;
+}
+EXPORT_SYMBOL(ceph_osdc_cleanup);
+
 /*
  * handle incoming message
  */