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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Kirill Smelkov <kirr@nexedi.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
	Michael Kerrisk <mtk.manpages@gmail.com>,
	Yongzhi Pan <panyongzhi@gmail.com>,
	Jonathan Corbet <corbet@lwn.net>,
	David Vrabel <david.vrabel@citrix.com>,
	Juergen Gross <jgross@suse.com>,
	Miklos Szeredi <miklos@szeredi.hu>, Tejun Heo <tj@kernel.org>,
	Kirill Tkhai <ktkhai@virtuozzo.com>,
	Arnd Bergmann <arnd@arndb.de>, Christoph Hellwig <hch@lst.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Julia Lawall <Julia.Lawall@lip6.fr>,
	Nikolaus Rath <Nikolaus@rath.org>,
	Han-Wen Nienhuys <hanwen@google.com>
Subject: Re: [PATCH 1/3] fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
Date: Sat, 6 Apr 2019 07:07:14 -1000
Message-ID: <CAHk-=wgqgN5j1ZWnyVLqqoyU=CCWTYOko3MDyU8L_5e21KvHAg@mail.gmail.com> (raw)
In-Reply-To: <c44fcf87d4c9d417b6cdced787091300fd45a3e4.1553637461.git.kirr@nexedi.com>

On Tue, Mar 26, 2019 at 12:20 PM Kirill Smelkov <kirr@nexedi.com> wrote:
>
> Commit 9c225f2655 (vfs: atomic f_pos accesses as per POSIX) added locking for
> file.f_pos access and in particular made concurrent read and write not possible
> [...]

Ok, I have applied this patch - but this patch only - as a
well-researched preparatory patch.

The actual conversion patch looks fine to me too, and I see a few
acks, but I think I'd like to see it during a merge window just
because it's large and does significant changes, while this one is
purely preparatory.

Al, comments?

One small note: please don't use lkml.org references since they tend
to be slow and flaky - use lore.kernel.org instead. Also, fix your git
config to use 12-character git hashes (best done by just removing the
explicit hash size entirely, and letting modern git shorten hashes
appropriately automatically).

                  Linus

  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-26 22:20 Kirill Smelkov
2019-03-26 23:22 ` [PATCH 3/3] fuse: Add FOPEN_STREAM and use stream_open() if filesystem returned that from open handler Kirill Smelkov
2019-04-24  7:13   ` [RESEND, PATCH " Kirill Smelkov
     [not found]     ` <20190424160611.2A71321900@mail.kernel.org>
2019-04-24 19:16       ` Kirill Smelkov
     [not found] ` <8794193f3040b798010970228d978c05ad56ec52.1553637462.git.kirr@nexedi.com>
2019-03-27  6:54   ` [PATCH 2/3] *: convert stream-like files from nonseekable_open -> stream_open Lubomir Rintel
2019-03-27 16:58 ` [PATCH 1/3] fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock Juergen Gross
2019-04-06 17:07 ` Linus Torvalds [this message]
2019-04-07 20:04   ` Kirill Smelkov
2019-04-08  0:09     ` Linus Torvalds
2019-04-14  7:11       ` Kirill Smelkov
     [not found] ` <4c4651e2-167e-bfcc-7b3e-cda118f98a69@rasmusvillemoes.dk>
     [not found]   ` <20190409203807.GA13855@deco.navytux.spb.ru>
     [not found]     ` <d8c23d05-8810-13a2-cc50-7a47ff35e90b@rasmusvillemoes.dk>
2019-04-11 12:38       ` Kirill Smelkov
2019-04-11 16:22         ` Linus Torvalds
2019-04-12 12:42           ` Kirill Smelkov
2019-04-13 16:54             ` Kirill Smelkov
2019-04-13 16:54               ` [PATCH 1/2] vfs: pass ppos=NULL to .read()/.write() of FMODE_STREAM files Kirill Smelkov
2019-04-13 17:27                 ` Linus Torvalds
2019-04-13 17:38                   ` Al Viro
2019-04-13 18:44                   ` Kirill Smelkov
2019-04-13 16:55               ` [PATCH 2/2] vfs: use &file->f_pos directly on files that have position Kirill Smelkov

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