| Date | Wed, 09 Nov 2011 13:30:48 -0800 | From | Greg KH <> | Subject | [001/264] CIFS: Fix incorrect max RFC1002 write size value |
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3.1-stable review patch. If anyone has any objections, please let me know.
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From: Pavel Shilovsky <piastry@etersoft.ru>
commit 94443f43404239c2a6dc4252a7cb9e77f5b1eb6e upstream.
..the length field has only 17 bits.
Acked-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/cifs/connect.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2807,10 +2807,10 @@ void cifs_setup_cifs_sb(struct smb_vol * /* * 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
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