lkml.org 
[lkml]   [2018]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 03/12] blkcg: convert blkg_lookup_create to find closest blkg
On Tue, Sep 11, 2018 at 02:41:28PM -0400, Dennis Zhou wrote:
> From: "Dennis Zhou (Facebook)" <dennisszhou@gmail.com>
>
> There are several scenarios where blkg_lookup_create can fail. Examples
> include the blkcg dying, request_queue is dying, or simply being OOM. At
> the end of the day, most handle this by simply falling back to the
> q->root_blkg and calling it a day.
>
> This patch implements the notion of closest blkg. During
> blkg_lookup_create, if it fails to create, return the closest blkg
> found or the q->root_blkg. blkg_try_get_closest is introduced and used
> during association so a bio is always attached to a blkg.
>
> Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>

Acked-by: Tejun Heo <tj@kernel.org>

Thanks.

--
tejun

\
 
 \ /
  Last update: 2018-09-12 01:51    [W:0.150 / U:4.584 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site