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Date: Thu, 11 Jun 2026 12:09:55 +0300
From: Mike Rapoport <rppt@kernel.org>
To: Zi Yan <ziy@nvidia.com>
Cc: Jan Kara <jack@suse.com>, Mark Fasheh <mark@fasheh.com>,
	Joel Becker <jlbec@evilplan.org>,
	Joseph Qi <joseph.qi@linux.alibaba.com>,
	Ryusuke Konishi <konishi.ryusuke@gmail.com>,
	Viacheslav Dubeyko <slava@dubeyko.com>,
	Trond Myklebust <trondmy@kernel.org>,
	Anna Schumaker <anna@kernel.org>,
	Chuck Lever <chuck.lever@oracle.com>,
	Jeff Layton <jlayton@kernel.org>, NeilBrown <neil@brown.name>,
	Olga Kornievskaia <okorniev@redhat.com>,
	Dai Ngo <Dai.Ngo@oracle.com>, Tom Talpey <tom@talpey.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
	Dave Kleikamp <shaggy@kernel.org>, Theodore Ts'o <tytso@mit.edu>,
	Miklos Szeredi <miklos@szeredi.hu>,
	Andreas Hindborg <a.hindborg@kernel.org>,
	Breno Leitao <leitao@debian.org>, Kees Cook <kees@kernel.org>,
	"Tigran A. Aivazian" <aivazian.tigran@gmail.com>,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
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	linux-nfs@vger.kernel.org, jfs-discussion@lists.sourceforge.net,
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Subject: Re: [PATCH 00/17] replace __get_free_pages() call with kmalloc()
Message-ID: <aip7Y3UHmXsdX8OH@kernel.org>
References: <20260523-b4-fs-v1-0-275e36a83f0e@kernel.org>
 <3FD8E1FD-6E18-46D9-AE93-00FA1A66C775@nvidia.com>
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In-Reply-To: <3FD8E1FD-6E18-46D9-AE93-00FA1A66C775@nvidia.com>

On Fri, Jun 05, 2026 at 04:00:33PM -0400, Zi Yan wrote:
> On 23 May 2026, at 13:54, Mike Rapoport (Microsoft) wrote:
> 
> > This is a (small) part of larger work of replacing page allocator calls
> > with kmalloc.
> 
> Is the goal to get rid of __get_free_page(s)()?

Yes, eventually.

My initial intention a few month ago was to remove the ugly casts [1], but
then willy pointed out that Linus objected to something like this [2] and
it looks like more than a decade old technical debt.

Since there are more than 600 or those it will take a while to convert
suitable gfp calls to kmalloc.
Afterwards we can re-evaluate what APIs we want to provide for allocations
that must have actual pages.

[1] https://lore.kernel.org/all/20251018093002.3660549-1-rppt@kernel.org/
[2] https://lore.kernel.org/all/CA+55aFwp4iy4rtX2gE2WjBGFL=NxMVnoFeHqYa2j1dYOMMGqxg@mail.gmail.com/ 

 
> Thanks.

-- 
Sincerely yours,
Mike.