From: Trond Myklebust <trondmy@hammerspace.com>
To: "osandov@osandov.com" <osandov@osandov.com>,
"amir73il@gmail.com" <amir73il@gmail.com>,
"dhowells@redhat.com" <dhowells@redhat.com>,
"lsf-pc@lists.linux-foundation.org"
<lsf-pc@lists.linux-foundation.org>
Cc: "hch@lst.de" <hch@lst.de>,
"miklos@szeredi.hu" <miklos@szeredi.hu>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>
Subject: Re: [LSF/MM/BPF TOPIC] Allowing linkat() to replace the destination
Date: Fri, 17 Jan 2020 14:33:01 +0000 [thread overview]
Message-ID: <d2730b78cf0eac685c3719909df34d8d1b0bc347.camel@hammerspace.com> (raw)
In-Reply-To: <364531.1579265357@warthog.procyon.org.uk>
On Fri, 2020-01-17 at 12:49 +0000, David Howells wrote:
> 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.
>
That seems to me like a "just go ahead and do it if you can justify it"
kind of thing. It has plenty of precedent, and fits easily into the
existing syscall, so why do we need a face-to-face discussion?
--
Trond Myklebust
Linux NFS client maintainer, Hammerspace
trond.myklebust@hammerspace.com
next prev parent reply other threads:[~2020-01-17 14:33 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-17 12:49 [LSF/MM/BPF TOPIC] Allowing linkat() to replace the destination David Howells
2020-01-17 14:33 ` Trond Myklebust [this message]
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
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