Re: [PATCH 1/2] vmalloc: use ZERO_SIZE_PTR / ZERO_OR_NULL_PTR
From: Dan Carpenter <hidden>
Date: 2012-02-28 13:28:51
Also in:
lkml
On Tue, Feb 28, 2012 at 03:59:25PM +0400, Dmitry Antipov wrote:
On 02/28/2012 01:44 PM, Dan Carpenter wrote:quoted
On Tue, Feb 28, 2012 at 01:33:59PM +0400, Dmitry Antipov wrote:quoted
- Fix vmap() to return ZERO_SIZE_PTR if 0 pages are requested; - fix __vmalloc_node_range() to return ZERO_SIZE_PTR if 0 bytes are requested; - fix __vunmap() to check passed pointer with ZERO_OR_NULL_PTR.Why?1) it was requested by the subsystem (co?)maintainer, see http://lkml.org/lkml/2012/1/27/475; 2) this looks to be a convenient way to trace/debug zero-size allocation errors (although I don't advocate it as a best way).
Could you include that in the changelog when the final version is ready? regards, dan carpenter
Attachments
- signature.asc [application/pgp-signature] 836 bytes