[PATCH] fix page number calculation bug for block layout decode buffer

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Signed-off-by: Jim Rees <rees@xxxxxxxxx>
Suggested-by: Andy Adamson <andros@xxxxxxxxxx>
---
 fs/nfs/blocklayout/blocklayout.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 48cfac3..576da5b 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -872,7 +872,7 @@ nfs4_blk_get_deviceinfo(struct nfs_server *server, const struct nfs_fh *fh,
 	 * GETDEVICEINFO's maxcount
 	 */
 	max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
-	max_pages = max_resp_sz >> PAGE_SHIFT;
+	max_pages = (max_resp_sz  + PAGE_SIZE - 1) >> PAGE_SHIFT;
 	dprintk("%s max_resp_sz %u max_pages %d\n",
 		__func__, max_resp_sz, max_pages);
 
-- 
1.7.5.4

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