Commit 94443f43 authored by Pavel Shilovsky's avatar Pavel Shilovsky Committed by Steve French
Browse files

CIFS: Fix incorrect max RFC1002 write size value 



..the length field has only 17 bits.

Cc: <stable@kernel.org>
Acked-by: default avatarJeff Layton <jlayton@samba.org>
Signed-off-by: default avatarPavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent a52c1eb7

fs/cifs/connect.c

+2 −2
Original line number Diff line number Diff line
@@ -2809,10 +2809,10 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, 


/*

 * When the server doesn't allow large posix writes, only allow a wsize of

 * 128k minus the size of the WRITE_AND_X header. That allows for a write up

 * 2^17-1 minus the size of the WRITE_AND_X header. That allows for a write up

 * to the maximum size described by RFC1002.

 */

#define CIFS_MAX_RFC1002_WSIZE (128 * 1024 - sizeof(WRITE_REQ) + 4)

#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)



/*

 * The default wsize is 1M. find_get_pages seems to return a maximum of 256