lkml.org 
[lkml]   [2004]   [Nov]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] [PATCH] kmem_alloc (generic wrapper for kmalloc and vmalloc)
Robert Love schrieb:
> On Wed, 2004-11-10 at 06:19 +0100, Carl-Daniel Hailfinger wrote:
>
>>Hi,
>>
>>it seems there is a bunch of drivers which want to allocate memory as
>>efficiently as possible in a wide range of allocation sizes. XFS and
>>NTFS seem to be examples. Implement a generic wrapper to reduce code
>>duplication.
>>Functions have the my_ prefixes to avoid name clash with XFS.
>
>
> No, no, no. A good patch would be fixing places where you see this.
>
> Code needs to conscientiously decide to use vmalloc over kmalloc. The
> behavior is different and the choice needs to be explicit.

Yes, but what do you suggest for the following problem:
alloc(max_loop*sizeof(struct loop_device))

where sizeof(struct loop_device)==304 and 1<=max_loop<=16384

For the smallest allocation (304 bytes) vmalloc is clearly wasteful
and for the largest allocation (~ 5 MBytes) kmalloc doesn't work.


Regards,
Carl-Daniel
-
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 14:07    [W:0.052 / U:30.192 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site