From: Matthew Wilcox <willy@infradead.org>
To: David Howells <dhowells@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, Al Viro <viro@zeniv.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>, Jan Kara <jack@suse.cz>,
Jeff Layton <jlayton@kernel.org>,
David Hildenbrand <david@redhat.com>,
Jason Gunthorpe <jgg@nvidia.com>,
Logan Gunthorpe <logang@deltatee.com>,
Hillf Danton <hdanton@sina.com>,
linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
syzbot+a440341a59e3b7142895@syzkaller.appspotmail.com,
Christoph Hellwig <hch@lst.de>,
John Hubbard <jhubbard@nvidia.com>
Subject: Re: [PATCH v13 01/12] splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE
Date: Thu, 9 Feb 2023 14:53:53 +0000 [thread overview]
Message-ID: <Y+UJAdnllBw+uxK+@casper.infradead.org> (raw)
In-Reply-To: <20230209102954.528942-2-dhowells@redhat.com>
On Thu, Feb 09, 2023 at 10:29:43AM +0000, David Howells wrote:
> + npages = alloc_pages_bulk_list(GFP_USER, npages, &pages);
Please don't use alloc_pages_bulk_list(). If nobody uses it, it can go
away again soon. Does alloc_pages_bulk_array() work for you? It's
faster.
> + /* Free any pages that didn't get touched at all. */
> + for (; reclaim >= PAGE_SIZE; reclaim -= PAGE_SIZE)
> + __free_page(bv[--npages].bv_page);
If you have that array, you can then use release_pages() to free
them, which will be faster.
next prev parent reply other threads:[~2023-02-09 14:54 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-09 10:29 [PATCH v13 00/12] iov_iter: Improve page extraction (pin or just list) David Howells
2023-02-09 10:29 ` [PATCH v13 01/12] splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE David Howells
2023-02-09 14:53 ` Matthew Wilcox [this message]
2023-02-09 15:06 ` David Howells
2023-02-09 16:15 ` [PATCH v14 " David Howells
2023-02-13 8:22 ` Christoph Hellwig
2023-02-15 13:17 ` David Howells
2023-02-15 14:24 ` Christoph Hellwig
2023-02-15 15:56 ` David Howells
2023-02-15 13:42 ` [PATCH] splice: Clean up direct_splice_read() a bit David Howells
2023-02-15 13:47 ` David Howells
2023-02-09 10:29 ` [PATCH v13 02/12] mm: Pass info, not iter, into filemap_get_pages() and unstatic it David Howells
2023-02-13 8:22 ` Christoph Hellwig
2023-02-09 10:29 ` [PATCH v13 03/12] splice: Do splice read from a buffered file without using ITER_PIPE David Howells
2023-02-13 8:28 ` Christoph Hellwig
2023-02-13 10:11 ` David Howells
2023-02-13 10:18 ` Christoph Hellwig
2023-02-13 11:15 ` David Howells
2023-02-13 14:44 ` Christoph Hellwig
2023-02-13 18:06 ` Guenter Roeck
2023-02-13 22:43 ` David Howells
2023-02-13 22:51 ` Guenter Roeck
2023-02-13 23:12 ` David Howells
2023-02-13 23:25 ` Guenter Roeck
2023-02-09 10:29 ` [PATCH v13 04/12] iov_iter: Kill ITER_PIPE David Howells
2023-02-13 8:28 ` Christoph Hellwig
2023-02-09 10:29 ` [PATCH v13 05/12] iov_iter: Define flags to qualify page extraction David Howells
2023-02-09 10:29 ` [PATCH v13 06/12] iov_iter: Add a function to extract a page list from an iterator David Howells
2023-02-09 10:29 ` [PATCH v13 07/12] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing David Howells
2023-02-09 10:29 ` [PATCH v13 08/12] block: Fix bio_flagged() so that gcc can better optimise it David Howells
2023-02-09 10:29 ` [PATCH v13 09/12] block: Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED with inverted logic David Howells
2023-02-09 10:29 ` [PATCH v13 10/12] block: Add BIO_PAGE_PINNED and associated infrastructure David Howells
2023-02-09 10:29 ` [PATCH v13 11/12] block: Convert bio_iov_iter_get_pages to use iov_iter_extract_pages David Howells
2023-02-09 10:29 ` [PATCH v13 12/12] block: convert bio_map_user_iov " David Howells
2023-02-10 22:31 ` [PATCH v13 00/12] iov_iter: Improve page extraction (pin or just list) Jens Axboe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=Y+UJAdnllBw+uxK+@casper.infradead.org \
--to=willy@infradead.org \
--cc=axboe@kernel.dk \
--cc=david@redhat.com \
--cc=dhowells@redhat.com \
--cc=hch@infradead.org \
--cc=hch@lst.de \
--cc=hdanton@sina.com \
--cc=jack@suse.cz \
--cc=jgg@nvidia.com \
--cc=jhubbard@nvidia.com \
--cc=jlayton@kernel.org \
--cc=linux-block@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=logang@deltatee.com \
--cc=syzbot+a440341a59e3b7142895@syzkaller.appspotmail.com \
--cc=viro@zeniv.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).