NFS: Convert struct nfs_page to use krefs

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index bd193af80162..c780e7e39f99 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -16,7 +16,7 @@
 #include <linux/sunrpc/auth.h>
 #include <linux/nfs_xdr.h>
 
-#include <asm/atomic.h>
+#include <linux/kref.h>
 
 /*
  * Valid flags for the radix tree
@@ -42,7 +42,7 @@ struct nfs_page {
         unsigned int            wb_offset,      /* Offset & ~PAGE_CACHE_MASK */
                                 wb_pgbase,      /* Start of page data */
                                 wb_bytes;       /* Length of request */
-        atomic_t                wb_count;       /* reference count */
+        struct kref             wb_kref;        /* reference count */
         unsigned long           wb_flags;
         struct nfs_writeverf    wb_verf;        /* Commit cookie */
 };
@@ -89,7 +89,7 @@ extern  void nfs_clear_page_writeback(struct nfs_page *req);
 
 
 /*
- * Lock the page of an asynchronous request without incrementing the wb_count
+ * Lock the page of an asynchronous request without getting a new reference
  */
 static inline int
 nfs_lock_request_dontget(struct nfs_page *req)
@@ -98,14 +98,14 @@ nfs_lock_request_dontget(struct nfs_page *req)
 }
 
 /*
- * Lock the page of an asynchronous request
+ * Lock the page of an asynchronous request and take a reference
  */
 static inline int
 nfs_lock_request(struct nfs_page *req)
 {
         if (test_and_set_bit(PG_BUSY, &req->wb_flags))
                 return 0;
-        atomic_inc(&req->wb_count);
+        kref_get(&req->wb_kref);
         return 1;
 }