NFS: Convert struct nfs_page to use krefs
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index f8a4ba5..257a7f8 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -85,9 +85,8 @@
req->wb_offset = offset;
req->wb_pgbase = offset;
req->wb_bytes = count;
- atomic_set(&req->wb_count, 1);
req->wb_context = get_nfs_open_context(ctx);
-
+ kref_init(&req->wb_kref);
return req;
}
@@ -160,11 +159,9 @@
*
* Note: Should never be called with the spinlock held!
*/
-void
-nfs_release_request(struct nfs_page *req)
+static void nfs_free_request(struct kref *kref)
{
- if (!atomic_dec_and_test(&req->wb_count))
- return;
+ struct nfs_page *req = container_of(kref, struct nfs_page, wb_kref);
/* Release struct file or cached credential */
nfs_clear_request(req);
@@ -172,6 +169,11 @@
nfs_page_free(req);
}
+void nfs_release_request(struct nfs_page *req)
+{
+ kref_put(&req->wb_kref, nfs_free_request);
+}
+
static int nfs_wait_bit_interruptible(void *word)
{
int ret = 0;