CIFS: Allow wsize to exceed CIFSMaxBufSize

This allows cifs_writepages to send data in larger chunks from the page
cache, without requiring larger memory allocations in other cases.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --cc fs/cifs/connect.c
Simple merge

diff --cc fs/cifs/file.c
Simple merge

diff --cc fs/cifs/transport.c
Simple merge