NFSv4.1: Fix another refcount issue in pnfs_find_alloc_layout

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

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index d737557..fe9968a 100644 (file)
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -907,18 +907,19 @@ pnfs_find_alloc_layout(struct inode *ino,
 
        dprintk("%s Begin ino=%p layout=%p\n", __func__, ino, nfsi->layout);
 
-       if (nfsi->layout) {
-               pnfs_get_layout_hdr(nfsi->layout);
-               return nfsi->layout;
-       }
+       if (nfsi->layout != NULL)
+               goto out_existing;
        spin_unlock(&ino->i_lock);
        new = alloc_init_layout_hdr(ino, ctx, gfp_flags);
        spin_lock(&ino->i_lock);
 
-       if (likely(nfsi->layout == NULL))       /* Won the race? */
+       if (likely(nfsi->layout == NULL)) {     /* Won the race? */
                nfsi->layout = new;
-       else
-               pnfs_free_layout_hdr(new);
+               return new;
+       }
+       pnfs_free_layout_hdr(new);
+out_existing:
+       pnfs_get_layout_hdr(nfsi->layout);
        return nfsi->layout;
 }