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Date:   Thu, 16 May 2019 19:00:35 +0200
From:   Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny@suse.com>
To:     Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc:     mkoutny@suse.cz, linux-mm@kvack.org, akpm@linux-foundation.org,
        oleg@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: mm: use down_read_killable for locking mmap_sem in
 access_remote_vm
Message-ID: <20190516170034.GO13687@blackbody.suse.cz>
References: <20190515083825.GJ13687@blackbody.suse.cz>
 <11ee83c8-5f0f-0950-a588-037bdcf9084e@yandex-team.ru>
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On Wed, May 15, 2019 at 11:48:32AM +0300, Konstantin Khlebnikov <khlebnikov@yandex-team.ru> wrote:
> This function ignores any error like reading from unmapped area and
> returns only size of successful transfer. It never returned any error codes.
This is a point I missed. Hence no need to adjust consumers of
__access_remote_vm() (they won't actually handle -EINTR correctly w/out
further changes). This beats my original idea with simplicity.


Reviewed-by: Michal Koutn? <mkoutny@suse.com>

Michal