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CIFS: Fix incorrect max RFC1002 write size value 

..the length field has only 17 bits.

Cc: <stable@kernel.org>
Acked-by: Jeff Layton <jlayton@samba.org>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2011-10-07 18:57:45 +04:00 committed by Steve French
parent a52c1eb7ae
commit 94443f4340
1 changed files with 2 additions and 2 deletions
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4
fs/cifs/connect.c
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@ -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