lkml.org 
[lkml]   [2003]   [Aug]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
Subjectvirt_to_offset() (Re: [RFC][PATCH] Make cryptoapi non-optional?)
From
In article <20030810081529.GX31810@waste.org> (at Sun, 10 Aug 2003 03:15:29 -0500), Matt Mackall <mpm@selenic.com> says:

:
> + sg[0].page = virt_to_page(tmp);
> + sg[0].offset = ((long) tmp & ~PAGE_MASK);
> + sg[0].length = sizeof(tmp);

BTW, we spread ((long) ptr & ~PAGE_MASK); it seems ugly.
Why don't we have vert_to_offset(ptr) or something like this?
#define virt_to_offset(ptr) ((unsigned long) (ptr) & ~PAGE_MASK)
Is this bad idea?

--
Hideaki YOSHIFUJI @ USAGI Project <yoshfuji@linux-ipv6.org>
GPG FP: 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:47    [W:0.169 / U:1.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site