cifs: writeback fix

Wait for the page to be written to the cache before we allow it
to be modified

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
David Howells 2022-01-24 23:15:18 +00:00 • committed by Steve French
commit 70ef38515b