From: Matthew Wilcox <willy@infradead.org>
To: Jeff Layton <jlayton@kernel.org>
Cc: ceph-devel@vger.kernel.org, linux-cachefs@redhat.com,
pfmeec@rit.edu, dhowells@redhat.com, idryomov@gmail.com,
stable@vger.kernel.org, Andrew W Elble <aweits@rit.edu>
Subject: Re: [PATCH v2] ceph: fix write_begin optimization when write is beyond EOF
Date: Sat, 12 Jun 2021 14:36:12 +0100 [thread overview]
Message-ID: <YMS4TOw8txQQ7VGr@casper.infradead.org> (raw)
In-Reply-To: <20210612001141.167797-1-jlayton@kernel.org>
On Fri, Jun 11, 2021 at 08:11:41PM -0400, Jeff Layton wrote:
> if ((pos_in_page == 0 && len == PAGE_SIZE) ||
> - (pos >= i_size_read(inode)) ||
> + (index > (i_size_read(inode) - 1) / PAGE_SIZE) ||
> (pos_in_page == 0 && (pos + len) >= i_size_read(inode))) {
You missed the (i_size == 0) case. And I really would factor out
reading i_size into a local variable.
> zero_user_segments(page, 0, pos_in_page,
> pos_in_page + len, PAGE_SIZE);
> --
> 2.31.1
>
next prev parent reply other threads:[~2021-06-12 13:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 19:59 [PATCH] ceph: fix write_begin optimization when write is beyond EOF Jeff Layton
2021-06-11 20:48 ` Matthew Wilcox
2021-06-11 22:20 ` Jeff Layton
2021-06-12 0:11 ` [PATCH v2] " Jeff Layton
2021-06-12 13:36 ` Matthew Wilcox [this message]
2021-06-12 18:35 ` [PATCH v3] " Jeff Layton
2021-06-13 11:04 ` Matthew Wilcox
2021-06-13 11:36 ` [PATCH v4] " Jeff Layton
2021-06-13 12:02 ` Jeff Layton
2021-06-13 15:15 ` Matthew Wilcox
2021-06-13 15:25 ` Jeff Layton
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=YMS4TOw8txQQ7VGr@casper.infradead.org \
--to=willy@infradead.org \
--cc=aweits@rit.edu \
--cc=ceph-devel@vger.kernel.org \
--cc=dhowells@redhat.com \
--cc=idryomov@gmail.com \
--cc=jlayton@kernel.org \
--cc=linux-cachefs@redhat.com \
--cc=pfmeec@rit.edu \
--cc=stable@vger.kernel.org \
/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