[CIFS] Fix cifs update of page cache. Write at correct offset when out of memory

and add_to_page_cache fails.  

Thanks to Shaggy for pointing out the fix.

Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Shaggy (shaggy@us.ibm.com)

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index dde2d251fc3d..30ab70ce5547 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1352,6 +1352,8 @@ static void cifs_copy_cache_pages(struct address_space *mapping,
                                       GFP_KERNEL)) {
                         page_cache_release(page);
                         cFYI(1, ("Add page cache failed"));
+                        data += PAGE_CACHE_SIZE;
+                        bytes_read -= PAGE_CACHE_SIZE;
                         continue;
                 }