From: Christoph Hellwig <hch@infradead.org>
To: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Christoph Hellwig <hch@infradead.org>,
Michal Hocko <mhocko@suse.com>,
Uladzislau Rezki <urezki@gmail.com>,
Mikulas Patocka <mpatocka@redhat.com>,
"Vishal Moola (Oracle)" <vishal.moola@gmail.com>,
SeongJae Park <sj@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
zkabelac@redhat.com, Matthew Sakai <msakai@redhat.com>,
linux-mm@kvack.org, dm-devel@lists.linux.dev
Subject: Re: [PATCH] mm: allow __GFP_RETRY_MAYFAIL in vmalloc
Date: Tue, 24 Feb 2026 06:26:42 -0800 [thread overview]
Message-ID: <aZ21Ij0hT6VyDg_J@infradead.org> (raw)
In-Reply-To: <aZ2zPzyoFUUNWdJ7@linux.dev>
On Tue, Feb 24, 2026 at 06:22:15AM -0800, Shakeel Butt wrote:
> > Why bother? __GFP_RETRY_MAYFAIL has pretty lose semantics. Trying
> > too hard to allocate PTEs is not breaking the overall concept.
> >
>
> One thing __GFP_RETRY_MAYFAIL is very clear about is to not trigger the
> oom-killer which is not the case for GFP_KERNEL. There are users who explicitly
> use __GFP_RETRY_MAYFAIL to avoid oom-killer.
That is a good point. Compared to other options documenting that it
might would still seem like the best option after just not using
__GFP_RETRY_MAYFAIL with vmalloc.
next prev parent reply other threads:[~2026-02-24 14:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 16:33 Mikulas Patocka
2026-02-21 1:19 ` SeongJae Park
2026-02-23 5:48 ` Anshuman Khandual
2026-02-23 19:02 ` Vishal Moola (Oracle)
2026-02-23 19:25 ` Mikulas Patocka
2026-02-23 20:07 ` Uladzislau Rezki
2026-02-23 22:08 ` Michal Hocko
2026-02-24 11:39 ` Uladzislau Rezki
2026-02-24 12:22 ` Michal Hocko
2026-02-24 14:03 ` Christoph Hellwig
2026-02-24 14:22 ` Shakeel Butt
2026-02-24 14:26 ` Christoph Hellwig [this message]
2026-02-24 14:34 ` Michal Hocko
2026-02-24 15:38 ` Uladzislau Rezki
2026-02-24 15:44 ` Michal Hocko
2026-02-24 15:51 ` Michal Hocko
2026-02-24 16:07 ` Uladzislau Rezki
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