linux-kernel - Re: [PATCH] mm: vmalloc: add cond_resched() in _

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Message-ID: <YNsM00SodmwqV6qN@dhcp22.suse.cz>
Date:   Tue, 29 Jun 2021 16:11:59 +0200
From:   Michal Hocko <mhocko@...e.com>
To:     Uladzislau Rezki <urezki@...il.com>
Cc:     Mel Gorman <mgorman@...e.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Rafael Aquini <aquini@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: vmalloc: add cond_resched() in __vunmap()

On Mon 28-06-21 18:40:02, Uladzislau Rezki wrote:
> Also another option can be:
> 
> if a pcp list is fully consumed, so a refilling is required to proceed with array
> populating, leave atomic section(enable irq), do a breath by invoking cond_resched()?

I do not know. I would rather not medle with the pcp batches. It is a hot
path and caller can decide the fallback mechanism.
-- 
Michal Hocko
SUSE Labs