From: Matthew Wilcox <willy@infradead.org>
To: Kent Overstreet <kent.overstreet@linux.dev>
Cc: NeilBrown <neilb@suse.de>, Amir Goldstein <amir73il@gmail.com>,
paulmck@kernel.org, lsf-pc@lists.linux-foundation.org,
linux-mm@kvack.org, linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Jan Kara <jack@suse.cz>
Subject: Re: [Lsf-pc] [LSF/MM/BPF TOPIC] Reclamation interactions with RCU
Date: Fri, 1 Mar 2024 02:48:52 +0000 [thread overview]
Message-ID: <ZeFCFGc8Gncpstd8@casper.infradead.org> (raw)
In-Reply-To: <l25hltgrr5epdzrdxsx6lgzvvtzfqxhnnvdru7vfjozdfhl4eh@xvl42xplak3u>
On Thu, Feb 29, 2024 at 09:39:17PM -0500, Kent Overstreet wrote:
> On Fri, Mar 01, 2024 at 01:16:18PM +1100, NeilBrown wrote:
> > Insisting that GFP_KERNEL allocations never returned NULL would allow us
> > to remove a lot of untested error handling code....
>
> If memcg ever gets enabled for all kernel side allocations we might
> start seeing failures of GFP_KERNEL allocations.
Why would we want that behaviour? A memcg-limited allocation should
behave like any other allocation -- block until we've freed some other
memory in this cgroup, either by swap or killing or ...
next prev parent reply other threads:[~2024-03-01 2:49 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-27 18:56 [LSF/MM/BPF TOPIC] Reclamation interactions with RCU Paul E. McKenney
2024-02-27 19:19 ` [Lsf-pc] " Amir Goldstein
2024-02-27 22:59 ` Paul E. McKenney
2024-03-01 3:28 ` Kent Overstreet
2024-03-05 2:43 ` Paul E. McKenney
2024-03-05 2:56 ` Yosry Ahmed
2024-02-28 19:37 ` Matthew Wilcox
2024-02-29 1:29 ` Dave Chinner
2024-02-29 4:20 ` Kent Overstreet
2024-02-29 4:17 ` Kent Overstreet
2024-02-29 4:24 ` Matthew Wilcox
2024-02-29 4:44 ` Kent Overstreet
2024-03-01 2:16 ` NeilBrown
2024-03-01 2:39 ` Kent Overstreet
2024-03-01 2:48 ` Matthew Wilcox [this message]
2024-03-01 3:09 ` Kent Overstreet
2024-03-01 3:33 ` James Bottomley
2024-03-01 3:52 ` Kent Overstreet
2024-03-01 4:01 ` Kent Overstreet
2024-03-01 4:09 ` NeilBrown
2024-03-01 4:18 ` Kent Overstreet
2024-03-01 4:18 ` James Bottomley
2024-03-01 4:08 ` James Bottomley
2024-03-01 4:15 ` Kent Overstreet
2024-03-05 2:54 ` Yosry Ahmed
2024-03-01 5:54 ` Dave Chinner
2024-03-01 20:20 ` Kent Overstreet
2024-03-01 23:47 ` NeilBrown
2024-03-02 0:02 ` Kent Overstreet
2024-03-02 11:33 ` Tetsuo Handa
2024-03-02 16:53 ` Matthew Wilcox
2024-03-03 22:45 ` NeilBrown
2024-03-03 22:54 ` Kent Overstreet
2024-03-04 0:20 ` Dave Chinner
2024-03-04 1:16 ` NeilBrown
2024-03-04 0:35 ` Matthew Wilcox
2024-03-04 1:27 ` NeilBrown
2024-03-04 2:05 ` Kent Overstreet
2024-03-12 14:46 ` Vlastimil Babka
2024-03-12 22:09 ` NeilBrown
2024-03-20 18:32 ` Dan Carpenter
2024-03-20 18:48 ` Vlastimil Babka
2024-03-20 18:55 ` Matthew Wilcox
2024-03-20 19:07 ` Kent Overstreet
2024-03-20 19:14 ` Matthew Wilcox
2024-03-20 19:33 ` Kent Overstreet
2024-03-20 19:09 ` Kent Overstreet
2024-03-21 6:27 ` Dan Carpenter
2024-03-22 1:47 ` NeilBrown
2024-03-22 6:13 ` Dan Carpenter
2024-03-24 22:31 ` NeilBrown
2024-03-25 8:43 ` Dan Carpenter
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