From: David Hildenbrand <david@redhat.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@linux-foundation.org>,
Arnd Bergmann <arnd@arndb.de>, Michal Hocko <mhocko@suse.com>,
Oscar Salvador <osalvador@suse.de>,
Matthew Wilcox <willy@infradead.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Minchan Kim <minchan@kernel.org>, Jann Horn <jannh@google.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Dave Hansen <dave.hansen@intel.com>,
Hugh Dickins <hughd@google.com>, Rik van Riel <riel@surriel.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Vlastimil Babka <vbabka@suse.cz>,
Richard Henderson <rth@twiddle.net>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
Matt Turner <mattst88@gmail.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Helge Deller <deller@gmx.de>, Chris Zankel <chris@zankel.net>,
Max Filippov <jcmvbkbc@gmail.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Peter Xu <peterx@redhat.com>,
Rolf Eike Beer <eike-kernel@sf-tec.de>,
linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org,
linux-parisc@vger.kernel.org, linux-xtensa@linux-xtensa.org,
linux-arch@vger.kernel.org, Linux API <linux-api@vger.kernel.org>
Subject: Re: [PATCH RFCv2] mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault/prealloc memory
Date: Mon, 15 Mar 2021 13:25:40 +0100 [thread overview]
Message-ID: <7d607d1c-efd5-3888-39bb-9e5f8bc08185@redhat.com> (raw)
In-Reply-To: <20210315122213.k52wtlbbhsw42pks@box>
On 15.03.21 13:22, Kirill A. Shutemov wrote:
> On Mon, Mar 08, 2021 at 05:45:20PM +0100, David Hildenbrand wrote:
>> + case -EHWPOISON: /* Skip over any poisoned pages. */
>> + start += PAGE_SIZE;
>> + continue;
>
> Why is it good approach? It's not abvious to me.
My main motivation was to simplify return code handling. I don't want to
return -EHWPOISON to user space and I don't want to convert it into
something misleading like -ENOMEM or -EINVAL. So I decided to handle
such stuff internally.
What would be you take on that?
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2021-03-15 12:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-08 16:45 [PATCH RFCv2] mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault/prealloc memory David Hildenbrand
2021-03-09 7:35 ` Rolf Eike Beer
2021-03-09 8:31 ` David Hildenbrand
2021-03-10 16:07 ` David Hildenbrand
2021-03-15 12:22 ` Kirill A. Shutemov
2021-03-15 12:25 ` David Hildenbrand [this message]
2021-03-15 13:03 ` Kirill A. Shutemov
2021-03-15 13:26 ` David Hildenbrand
2021-03-15 16:28 ` David Hildenbrand
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7d607d1c-efd5-3888-39bb-9e5f8bc08185@redhat.com \
--to=david@redhat.com \
--cc=James.Bottomley@HansenPartnership.com \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=chris@zankel.net \
--cc=dave.hansen@intel.com \
--cc=deller@gmx.de \
--cc=eike-kernel@sf-tec.de \
--cc=hughd@google.com \
--cc=ink@jurassic.park.msu.ru \
--cc=jannh@google.com \
--cc=jcmvbkbc@gmail.com \
--cc=jgg@ziepe.ca \
--cc=kirill.shutemov@linux.intel.com \
--cc=kirill@shutemov.name \
--cc=linux-alpha@vger.kernel.org \
--cc=linux-api@vger.kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-xtensa@linux-xtensa.org \
--cc=mattst88@gmail.com \
--cc=mhocko@suse.com \
--cc=mike.kravetz@oracle.com \
--cc=minchan@kernel.org \
--cc=mst@redhat.com \
--cc=osalvador@suse.de \
--cc=peterx@redhat.com \
--cc=riel@surriel.com \
--cc=rth@twiddle.net \
--cc=tsbogend@alpha.franken.de \
--cc=vbabka@suse.cz \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).