From: Jens Axboe <axboe@kernel.dk>
To: jhubbard.send.patches@gmail.com, Jan Kara <jack@suse.cz>,
Christoph Hellwig <hch@infradead.org>,
Dave Chinner <dchinner@redhat.com>,
"Darrick J . Wong" <djwong@kernel.org>,
Theodore Ts'o <tytso@mit.edu>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Miklos Szeredi <miklos@szeredi.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Chaitanya Kulkarni <kch@nvidia.com>
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-xfs@vger.kernel.org, linux-mm@kvack.org,
LKML <linux-kernel@vger.kernel.org>,
John Hubbard <jhubbard@nvidia.com>
Subject: Re: [PATCH 4/6] block, bio, fs: convert most filesystems to pin_user_pages_fast()
Date: Sun, 27 Feb 2022 14:59:35 -0700 [thread overview]
Message-ID: <8b5b35fa-3c70-adc8-ca3a-4829388c4d12@kernel.dk> (raw)
In-Reply-To: <20220227093434.2889464-5-jhubbard@nvidia.com>
On 2/27/22 2:34 AM, jhubbard.send.patches@gmail.com wrote:
> From: John Hubbard <jhubbard@nvidia.com>
>
> Use pin_user_pages_fast(), pin_user_page(), and unpin_user_page() calls,
> in place of get_user_pages_fast(), get_page() and put_page().
>
> This converts the Direct IO parts of most filesystems over to using
> FOLL_PIN (pin_user_page*()) page pinning.
The commit message needs to explain why a change is being made, not what
is being done. The latter I can just look at the code for.
Didn't even find it in in your cover letter, had to go to the original
posting for that.
--
Jens Axboe
next prev parent reply other threads:[~2022-02-27 21:59 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-27 9:34 [PATCH 0/6] block, fs: convert most Direct IO cases to FOLL_PIN jhubbard.send.patches
2022-02-27 9:34 ` [PATCH 1/6] mm/gup: introduce pin_user_page() jhubbard.send.patches
2022-02-27 9:34 ` [PATCH 2/6] iov_iter: new iov_iter_pin_pages*(), for FOLL_PIN pages jhubbard.send.patches
2022-02-27 21:57 ` Jens Axboe
2022-02-27 22:09 ` John Hubbard
2022-02-28 22:49 ` John Hubbard
2022-02-27 9:34 ` [PATCH 3/6] block, fs: assert that key paths use iovecs, and nothing else jhubbard.send.patches
2022-02-27 21:58 ` Jens Axboe
2022-02-27 22:12 ` John Hubbard
2022-02-27 22:15 ` Al Viro
2022-02-27 22:27 ` John Hubbard
2022-02-28 3:29 ` John Hubbard
2022-02-27 9:34 ` [PATCH 4/6] block, bio, fs: convert most filesystems to pin_user_pages_fast() jhubbard.send.patches
2022-02-27 21:59 ` Jens Axboe [this message]
2022-02-27 22:13 ` John Hubbard
2022-02-27 9:34 ` [PATCH 5/6] NFS: direct-io: convert to FOLL_PIN pages jhubbard.send.patches
2022-02-27 9:34 ` [PATCH 6/6] fuse: convert direct IO paths to use FOLL_PIN jhubbard.send.patches
2022-02-28 15:59 ` Miklos Szeredi
2022-02-28 21:16 ` John Hubbard
2022-03-01 9:41 ` Miklos Szeredi
2022-03-02 8:07 ` John Hubbard
-- strict thread matches above, loose matches on Subject: below --
2022-08-27 8:36 [PATCH 0/6] convert most filesystems to pin_user_pages_fast() John Hubbard
2022-08-27 8:36 ` [PATCH 4/6] block, bio, fs: " John Hubbard
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