linux-kernel - Re: [PATCH] scatterlist fallout: drivers/scsi/arm/

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Date:	Mon, 29 Oct 2007 10:36:26 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Al Viro <viro@....linux.org.uk>
Cc:	Russell King <rmk+lkml@....linux.org.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scatterlist fallout: drivers/scsi/arm/

On Mon, Oct 29 2007, Al Viro wrote:
> On Mon, Oct 29, 2007 at 10:12:06AM +0100, Jens Axboe wrote:
> > > > Russell, will you be merging this yourself or do you want me to include
> > > > it in the sg fixup branch?
> > > 
> > > It's already merged into the ARM git tree as of Friday.  Waiting for
> > > ack's from various people for other merged patches before sending the
> > > set to Linus.
> > 
> > Great, thanks.
> 
> Speaking of sg fixups...  What should be done about zfcp_address_to_sg()?
> You've added the third argument to all calls, but not to definition...
> 
> static inline void
> zfcp_address_to_sg(void *address, struct scatterlist *list, size_t size)
> {
> 	sg_set_buf(list, address, size);
> }
> seems to be a plausible guess at what you meant to do, but that's a guess
> without anything to back it - I really have not looked into the area at all.

Should already be fixed up in the 'sg' branch, like this:

diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 0754542..e268f79 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -70,11 +70,12 @@ zfcp_sg_to_address(struct scatterlist *list)
  * zfcp_address_to_sg - set up struct scatterlist from kernel address
  * @address: kernel address
  * @list: struct scatterlist
+ * @size: buffer size
  */
 static inline void
-zfcp_address_to_sg(void *address, struct scatterlist *list)
+zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
 {
-	sg_set_buf(list, address, 0);
+	sg_set_buf(list, address, size);
 }
 
 #define REQUEST_LIST_SIZE 128

-- 
Jens Axboe

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