Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1622999 > unrolled thread

Re: [PATCH 3/9] mm: drop page_initialized check from get_nid_for_pfn

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: [PATCH 3/9] mm: drop page_initialized check from get_nid_for_pfn Vlastimil Babka <vbabka@suse.cz> - 2017-04-13 15:00 +0200

#1622999 — Re: [PATCH 3/9] mm: drop page_initialized check from get_nid_for_pfn

On 04/10/2017 01:03 PM, Michal Hocko wrote:
> From: Michal Hocko <mhocko@suse.com>
> 
> c04fc586c1a4 ("mm: show node to memory section relationship with
> symlinks in sysfs") has added means to export memblock<->node
> association into the sysfs. It has also introduced get_nid_for_pfn
> which is a rather confusing counterpart of pfn_to_nid which checks also
> whether the pfn page is already initialized (page_initialized).  This
> is done by checking page::lru != NULL which doesn't make any sense at
> all. Nothing in this path really relies on the lru list being used or
> initialized. Just remove it because this will become a problem with
> later patches.
> 
> Thanks to Reza Arbab for testing which revealed this to be a problem
> (http://lkml.kernel.org/r/20170403202337.GA12482@dhcp22.suse.cz)
> 
> Signed-off-by: Michal Hocko <mhocko@suse.com>

Acked-by: Vlastimil Babka <vbabka@suse.cz>

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web