From: Linus Torvalds <torvalds@linux-foundation.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: George Spelvin <linux@horizon.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Update of file offset on write() etc. is non-atomic with I/O
Date: Mon, 3 Mar 2014 15:54:29 -0800 [thread overview]
Message-ID: <CA+55aFwSr-CnqE6vxykhkNTo7BkFXGD6uGJC00A2vJd10HZxJA@mail.gmail.com> (raw)
In-Reply-To: <20140303233902.GP18016@ZenIV.linux.org.uk>
On Mon, Mar 3, 2014 at 3:39 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
>
> do_sendfile() is also there and this one is even more unpleasant ;-/
> We probably can ignore that one (until POSIX learns of its existence),
> thouhg...
Yeah, I saw the do_sendfile one and decided we don't care. Not only is
is out of POSIX spec (so if you break it you get to keep both pieces),
the whole sendfile() thing is a bit of a hack.
But we could take the f_pos_lock explicitly in do_sendfile for the
!ppos case if we decide we care. The error handling is the main
annoyance.
Linus
next prev parent reply other threads:[~2014-03-03 23:54 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-03 21:03 Update of file offset on write() etc. is non-atomic with I/O George Spelvin
2014-03-03 21:26 ` Al Viro
2014-03-03 21:52 ` Linus Torvalds
2014-03-03 22:01 ` Al Viro
2014-03-03 22:17 ` Linus Torvalds
2014-03-03 23:28 ` Al Viro
2014-03-03 23:34 ` Linus Torvalds
2014-03-03 23:42 ` Al Viro
2014-03-03 23:59 ` Linus Torvalds
2014-03-04 0:23 ` Al Viro
2014-03-04 0:42 ` Linus Torvalds
2014-03-04 1:05 ` Al Viro
2014-03-04 20:00 ` Al Viro
2014-03-04 21:17 ` Linus Torvalds
2014-03-05 0:04 ` Al Viro
2014-03-10 15:55 ` Al Viro
2014-03-03 22:55 ` Linus Torvalds
2014-03-03 23:23 ` Linus Torvalds
2014-03-03 23:39 ` Al Viro
2014-03-03 23:54 ` Linus Torvalds [this message]
2014-03-03 23:54 ` Al Viro
2014-03-04 20:11 ` Cedric Blancher
2014-03-04 0:07 ` George Spelvin
2014-05-04 7:04 ` Michael Kerrisk
[not found] <a8df285f-de7f-4a3a-9a19-e0ad07ab3a5c@blur>
2014-02-20 18:15 ` Zuckerman, Boris
2014-02-20 18:29 ` Al Viro
2014-02-21 6:01 ` Michael Kerrisk (man-pages)
2014-02-23 1:18 ` Kevin Easton
2014-02-23 7:38 ` Michael Kerrisk (man-pages)
-- strict thread matches above, loose matches on Subject: below --
2014-02-17 15:41 Michael Kerrisk (man-pages)
2014-02-18 13:00 ` Michael Kerrisk
2014-02-20 17:14 ` Linus Torvalds
2014-03-03 17:36 ` Linus Torvalds
2014-03-03 21:45 ` Al Viro
2014-03-03 21:56 ` Linus Torvalds
2014-03-03 22:09 ` Al Viro
2014-03-03 22:20 ` Linus Torvalds
2014-03-03 22:01 ` Linus Torvalds
2014-03-03 22:10 ` Al Viro
2014-03-03 22:22 ` Linus Torvalds
2014-03-06 15:03 ` Michael Kerrisk (man-pages)
2014-03-07 3:38 ` Yongzhi Pan
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