[CIFS] Do not overwrite aops
cifs should not be overwriting an element of the aops structure, since the
structure is shared by all cifs inodes. Instead define a separate aops
structure to suit each purpose.
I also took the liberty of replacing a hard-coded 4096 with PAGE_CACHE_SIZE
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 379369e..d62e29f 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1959,3 +1959,19 @@
/* .sync_page = cifs_sync_page, */
/* .direct_IO = */
};
+
+/*
+ * cifs_readpages requires the server to support a buffer large enough to
+ * contain the header plus one complete page of data. Otherwise, we need
+ * to leave cifs_readpages out of the address space operations.
+ */
+struct address_space_operations cifs_addr_ops_smallbuf = {
+ .readpage = cifs_readpage,
+ .writepage = cifs_writepage,
+ .writepages = cifs_writepages,
+ .prepare_write = cifs_prepare_write,
+ .commit_write = cifs_commit_write,
+ .set_page_dirty = __set_page_dirty_nobuffers,
+ /* .sync_page = cifs_sync_page, */
+ /* .direct_IO = */
+};
