From: Michal Hocko <mhocko@kernel.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Christopher Lameter <cl@linux.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-api@vger.kernel.org,
Marek Szyprowski <m.szyprowski@samsung.com>,
Michal Nazarewicz <mina86@mina86.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Guy Shattah <sguy@mellanox.com>,
Anshuman Khandual <khandual@linux.vnet.ibm.com>,
Laura Abbott <labbott@redhat.com>,
Vlastimil Babka <vbabka@suse.cz>
Subject: Re: [RFC PATCH 3/3] mm/map_contig: Add mmap(MAP_CONTIG) support
Date: Mon, 16 Oct 2017 14:18:08 +0200 [thread overview]
Message-ID: <20171016121808.m4sq3g5nxeyxoymc@dhcp22.suse.cz> (raw)
In-Reply-To: <20171016095447.GA4639@amd>
On Mon 16-10-17 11:54:47, Pavel Machek wrote:
> On Mon 2017-10-16 10:18:04, Michal Hocko wrote:
> > On Sun 15-10-17 08:58:56, Pavel Machek wrote:
[...]
> > > So you'd suggest using ioctl() for allocating memory?
> >
> > Why not using standard mmap on the device fd?
>
> No, sorry, that's something very different work, right? Lets say I
> have a disk, and I'd like to write to it, using continguous memory for
> performance.
>
> So I mmap(MAP_CONTIG) 1GB working of working memory, prefer some data
> structures there, maybe recieve from network, then decide to write
> some and not write some other.
Why would you want this?
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-10-16 12:18 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-03 23:56 [RFC] mmap(MAP_CONTIG) Mike Kravetz
2017-10-04 11:54 ` Michal Nazarewicz
2017-10-04 17:08 ` Mike Kravetz
2017-10-04 21:29 ` Laura Abbott
2017-10-04 13:49 ` Anshuman Khandual
2017-10-04 16:05 ` Christopher Lameter
2017-10-04 17:38 ` Mike Kravetz
2017-10-04 17:35 ` Mike Kravetz
2017-10-05 7:06 ` Vlastimil Babka
2017-10-05 8:58 ` Guy Shattah
2017-10-05 12:36 ` Guy Shattah
2017-10-05 14:30 ` Christopher Lameter
2017-10-12 1:46 ` [RFC PATCH 0/3] Add mmap(MAP_CONTIG) support Mike Kravetz
2017-10-12 1:46 ` [RFC PATCH 1/3] mm/map_contig: Add VM_CONTIG flag to vma struct Mike Kravetz
2017-10-12 1:46 ` [RFC PATCH 2/3] mm/map_contig: Use pre-allocated pages for VM_CONTIG mappings Mike Kravetz
2017-10-12 11:04 ` Anshuman Khandual
2017-10-12 1:46 ` [RFC PATCH 3/3] mm/map_contig: Add mmap(MAP_CONTIG) support Mike Kravetz
2017-10-12 11:22 ` Anshuman Khandual
2017-10-13 15:14 ` Christopher Lameter
2017-10-12 14:37 ` Michal Hocko
2017-10-12 17:19 ` Mike Kravetz
2017-10-13 8:40 ` Michal Hocko
2017-10-13 15:20 ` Christopher Lameter
2017-10-13 15:28 ` Michal Hocko
2017-10-13 15:42 ` Christopher Lameter
2017-10-13 15:47 ` Michal Hocko
[not found] ` <20171013154747.2jv7rtfqyyagiodn-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2017-10-13 15:56 ` Christopher Lameter
2017-10-13 16:17 ` Michal Hocko
2017-10-15 7:50 ` Guy Shattah
2017-10-16 8:24 ` Michal Hocko
2017-10-16 9:11 ` Guy Shattah
2017-10-16 12:32 ` Michal Hocko
[not found] ` <20171016123248.csntl6luxgafst6q-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2017-10-16 16:00 ` Christopher Lameter
2017-10-16 17:42 ` Michal Hocko
[not found] ` <20171016174229.pz3o4uhzz3qbrp6n-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2017-10-16 17:56 ` Christopher Lameter
2017-10-16 18:17 ` Michal Hocko
2017-10-23 15:25 ` David Nellans
2017-10-17 10:50 ` Guy Shattah
2017-10-17 10:59 ` Michal Hocko
2017-10-17 13:22 ` Michal Nazarewicz
2017-10-17 14:20 ` Guy Shattah
2017-10-17 17:44 ` Vlastimil Babka
2017-10-17 18:23 ` Mike Kravetz
2017-10-17 19:56 ` Vlastimil Babka
2017-10-16 10:33 ` Michal Nazarewicz
2017-10-16 11:09 ` Guy Shattah
2017-10-16 17:43 ` Mike Kravetz
2017-10-16 18:07 ` Michal Hocko
2017-10-16 20:32 ` Mike Kravetz
2017-10-16 20:58 ` Michal Hocko
2017-10-16 21:03 ` Laura Abbott
2017-10-16 21:18 ` Mike Kravetz
2017-10-17 6:59 ` Vlastimil Babka
2017-10-15 6:58 ` Pavel Machek
2017-10-16 8:18 ` Michal Hocko
2017-10-16 9:54 ` Pavel Machek
2017-10-16 12:18 ` Michal Hocko [this message]
[not found] ` <20171016121808.m4sq3g5nxeyxoymc-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2017-10-16 16:02 ` Christopher Lameter
2017-10-16 17:33 ` Michal Hocko
2017-10-16 17:53 ` Christopher Lameter
2017-10-15 8:07 ` Guy Shattah
2017-10-12 10:36 ` [RFC PATCH 0/3] " Anshuman Khandual
2017-10-12 14:25 ` Anshuman Khandual
2017-10-23 22:10 ` [RFC] mmap(MAP_CONTIG) Dave Hansen
2017-10-24 22:49 ` Mike Kravetz
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