linux-fsdevel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: David Howells <dhowells@redhat.com>
To: lsf-pc@lists.linux-foundation.org,
	Amir Goldstein <amir73il@gmail.com>,
	Omar Sandoval <osandov@osandov.com>
Cc: dhowells@redhat.com, Al Viro <viro@zeniv.linux.org.uk>,
	Christoph Hellwig <hch@lst.de>,
	Miklos Szeredi <miklos@szeredi.hu>,
	linux-fsdevel@vger.kernel.org
Subject: [LSF/MM/BPF TOPIC] Allowing linkat() to replace the destination
Date: Fri, 17 Jan 2020 12:49:17 +0000	[thread overview]
Message-ID: <364531.1579265357@warthog.procyon.org.uk> (raw)

It may be worth a discussion of whether linkat() could be given a flag to
allow the destination to be replaced or if a new syscall should be made for
this - or whether it should be disallowed entirely.

A set of patches has been posted by Omar Sandoval that makes this possible:

    https://lore.kernel.org/linux-fsdevel/cover.1524549513.git.osandov@fb.com/

though it only includes filesystem support for btrfs.

This could be useful for cachefiles:

	https://lore.kernel.org/linux-fsdevel/3326.1579019665@warthog.procyon.org.uk/

and overlayfs.

David


             reply	other threads:[~2020-01-17 12:49 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-17 12:49 David Howells [this message]
2020-01-17 14:33 ` Trond Myklebust
2020-01-17 15:46   ` Al Viro
2020-01-17 16:12     ` Trond Myklebust
2020-01-17 16:48       ` Al Viro
2020-01-17 16:36     ` Omar Sandoval
2020-01-17 16:59       ` Al Viro
2020-01-17 17:28         ` Omar Sandoval
2020-01-17 18:17           ` Al Viro
2020-01-17 20:22             ` Omar Sandoval
2020-01-17 22:22               ` Al Viro
2020-01-17 23:54                 ` Omar Sandoval
2020-01-18  0:47                   ` Al Viro
2020-01-18  1:17                     ` Omar Sandoval
2020-01-18  2:20                       ` Al Viro
2020-01-21 23:05                         ` Omar Sandoval
2020-01-22  6:57                           ` Amir Goldstein
2020-01-22 22:10                             ` Omar Sandoval
2020-01-23  3:47                               ` Al Viro
2020-01-23  7:16                                 ` Dave Chinner
2020-01-23  7:47                                   ` Amir Goldstein
2020-01-24 21:25                                     ` Dave Chinner
2020-01-31  5:24                                       ` Darrick J. Wong
2020-01-31  5:29                                         ` hch
2020-01-31  7:00                                         ` Amir Goldstein
2020-01-31 20:33                                           ` Omar Sandoval
2020-01-31 21:55                                             ` Amir Goldstein
2020-01-28  1:27                                   ` Omar Sandoval
2020-01-28 14:35                                 ` David Howells
2020-01-31  5:31                                   ` hch
2020-01-31  8:04                                   ` David Howells
2020-01-31  8:56                                     ` Amir Goldstein
2020-01-22  9:53                       ` David Howells
2020-01-17 14:47 ` David Howells
2020-01-17 14:56   ` Trond Myklebust
2020-01-17 16:01     ` Al Viro

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=364531.1579265357@warthog.procyon.org.uk \
    --to=dhowells@redhat.com \
    --cc=amir73il@gmail.com \
    --cc=hch@lst.de \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=lsf-pc@lists.linux-foundation.org \
    --cc=miklos@szeredi.hu \
    --cc=osandov@osandov.com \
    --cc=viro@zeniv.linux.org.uk \
    --subject='Re: [LSF/MM/BPF TOPIC] Allowing linkat() to replace the destination' \
    /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

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).