From: Linus Torvalds <torvalds@linux-foundation.org>
To: Omar Sandoval <osandov@osandov.com>
Cc: linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-btrfs <linux-btrfs@vger.kernel.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>,
Dave Chinner <david@fromorbit.com>, Jann Horn <jannh@google.com>,
Amir Goldstein <amir73il@gmail.com>,
Aleksa Sarai <cyphar@cyphar.com>,
Linux API <linux-api@vger.kernel.org>,
Kernel Team <kernel-team@fb.com>
Subject: Re: [PATCH v9 1/9] iov_iter: add copy_struct_from_iter()
Date: Thu, 1 Apr 2021 09:05:22 -0700 [thread overview]
Message-ID: <CAHk-=wgpn=GYW=2ZNizdVdM0qGGk_iM_Ho=0eawhNaKHifSdpg@mail.gmail.com> (raw)
In-Reply-To: <0e7270919b461c4249557b12c7dfce0ad35af300.1617258892.git.osandov@fb.com>
On Wed, Mar 31, 2021 at 11:51 PM Omar Sandoval <osandov@osandov.com> wrote:
>
> + *
> + * The recommended usage is something like the following:
> + *
> + * if (usize > PAGE_SIZE)
> + * return -E2BIG;
Maybe this should be more than a recommendation, and just be inside
copy_struct_from_iter(), because otherwise the "check_zeroed_user()"
call might be quite the timesink for somebody who does something
stupid.
But otherwise this new version (still) looks fine to me.
Linus
next prev parent reply other threads:[~2021-04-01 17:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 6:51 [PATCH v9 0/9] fs: interface for directly reading/writing compressed data Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 1/9] iov_iter: add copy_struct_from_iter() Omar Sandoval
2021-04-01 16:05 ` Linus Torvalds [this message]
2021-04-02 7:33 ` Omar Sandoval
2021-04-02 8:04 ` Christian Brauner
2021-04-02 17:50 ` Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 2/9] fs: add O_ALLOW_ENCODED open flag Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 3/9] fs: add RWF_ENCODED for reading/writing compressed data Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 4/9] btrfs: don't advance offset for compressed bios in btrfs_csum_one_bio() Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 5/9] btrfs: add ram_bytes and offset to btrfs_ordered_extent Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 6/9] btrfs: support different disk extent size for delalloc Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 7/9] btrfs: optionally extend i_size in cow_file_range_inline() Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 8/9] btrfs: implement RWF_ENCODED reads Omar Sandoval
2021-04-01 6:51 ` [PATCH v9 9/9] btrfs: implement RWF_ENCODED writes Omar Sandoval
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='CAHk-=wgpn=GYW=2ZNizdVdM0qGGk_iM_Ho=0eawhNaKHifSdpg@mail.gmail.com' \
--to=torvalds@linux-foundation.org \
--cc=amir73il@gmail.com \
--cc=cyphar@cyphar.com \
--cc=david@fromorbit.com \
--cc=hch@infradead.org \
--cc=jannh@google.com \
--cc=kernel-team@fb.com \
--cc=linux-api@vger.kernel.org \
--cc=linux-btrfs@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=osandov@osandov.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).