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Date: Fri, 19 Jun 2009 12:20:02 +0300
From: Sergey Senozhatsky <sergey.senozhatsky@mail.by>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
       linux-kernel@vger.kernel.org
Subject: blk-settings.c integer truncation
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Hello.
I was asking
> Should BLK_BOUNCE_ANY be (-1UL)?

No. It should not.

git annotate gives for blkdev.h:
Andi Kleen     2008-04-21 09:51:05 +0200       705)#define BLK_BOUNCE_ANY              (-1ULL)
...

...
(Martin K. Petersen     2009-05-22 17:17:51 -0400       311)    unsigned long           bounce_pfn;
...
(Martin K. Petersen     2009-05-22 17:17:50 -0400       1020)static inline unsigned long queue_bounce_pfn(struct request_queue *q)
(Martin K. Petersen     2009-05-22 17:17:50 -0400       1021){
(Martin K. Petersen     2009-05-22 17:17:51 -0400       1022)   return q->limits.bounce_pfn;
(Martin K. Petersen     2009-05-22 17:17:50 -0400       1023)}
...

I think, commit need to be reworked a bit.

	Sergey