[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <YxbqUvDJ/rJsLMPZ@infradead.org>
Date: Mon, 5 Sep 2022 23:36:02 -0700
From: Christoph Hellwig <hch@...radead.org>
To: John Hubbard <jhubbard@...dia.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Jens Axboe <axboe@...nel.dk>,
Alexander Viro <viro@...iv.linux.org.uk>,
Miklos Szeredi <miklos@...redi.hu>,
Christoph Hellwig <hch@...radead.org>,
"Darrick J . Wong" <djwong@...nel.org>,
Trond Myklebust <trond.myklebust@...merspace.com>,
Anna Schumaker <anna@...nel.org>, Jan Kara <jack@...e.cz>,
David Hildenbrand <david@...hat.com>,
Logan Gunthorpe <logang@...tatee.com>,
linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-xfs@...r.kernel.org, linux-nfs@...r.kernel.org,
linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/7] convert most filesystems to pin_user_pages_fast()
On Tue, Aug 30, 2022 at 09:18:36PM -0700, John Hubbard wrote:
> The conversion is temporarily guarded by
> CONFIG_BLK_USE_PIN_USER_PAGES_FOR_DIO. In the future (not part of this
> series), when we are certain that all filesystems have converted their
> Direct IO paths to FOLL_PIN, then we can do the final step, which is to
> get rid of CONFIG_BLK_USE_PIN_USER_PAGES_FOR_DIO and search-and-replace
> the dio_w_*() functions with their final names (see bvec.h changes).
What is the the point of these wrappers? We should be able to
convert one caller at a time in an entirely safe way.
Powered by blists - more mailing lists