linux-kernel - Re: [PATCH v5 4/4] mm: Remove managed_page

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Message-ID: <20181114192346.vgqrricdb7to7hgr@soleen.tm1wkky2jk1uhgkn0ivaxijq1c.bx.internal.cloudapp.net>
Date:   Wed, 14 Nov 2018 19:23:46 +0000
From:   Pavel Tatashin <pasha.tatashin@...een.com>
To:     Arun KS <arunks@...eaurora.org>
Cc:     keescook@...omium.org, khlebnikov@...dex-team.ru,
        minchan@...nel.org, getarunks@...il.com,
        gregkh@...uxfoundation.org, akpm@...ux-foundation.org,
        mhocko@...nel.org, vbabka@...e.cz, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, vatsa@...eaurora.org, willy@...radead.org
Subject: Re: [PATCH v5 4/4] mm: Remove managed_page_count spinlock

On 18-11-13 12:03:10, Arun KS wrote:
> Now that totalram_pages and managed_pages are atomic varibles, no need
> of managed_page_count spinlock. The lock had really a weak consistency
> guarantee. It hasn't been used for anything but the update but no reader
> actually cares about all the values being updated to be in sync.
> 
> Signed-off-by: Arun KS <arunks@...eaurora.org>
> Reviewed-by: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
> Acked-by: Michal Hocko <mhocko@...e.com>
> Acked-by: Vlastimil Babka <vbabka@...e.cz>

Reviewed-by: Pavel Tatashin <pasha.tatashin@...een.com>