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From: Neil Brown <neilb@suse.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
	viro@zeniv.linux.org.uk, adilger@sun.com, corbet@lwn.net,
	npiggin@suse.de, hooanon05@yahoo.co.jp, bfields@fieldses.org,
	miklos@szeredi.hu, linux-fsdevel@vger.kernel.org,
	sfrench@us.ibm.com, philippe.deniel@CEA.FR,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH -V18 04/13] vfs: Allow handle based open on symlinks
Date: Sat, 21 Aug 2010 09:47:59 +1000	[thread overview]
Message-ID: <20100821094759.24a6dc37@notabene> (raw)
In-Reply-To: <1282310729.2605.989.camel@laptop>

On Fri, 20 Aug 2010 15:25:29 +0200
Peter Dijkstra <peter@infradead.org> wrote:

> On Fri, 2010-08-20 at 19:53 +1000, Neil Brown wrote:
> > With futexes we suddenly get a file descriptor for something we could never
> > get a file descriptor on before and that doesn't seem to be a problem. 
> 
> FWIW
> 
> commit 82af7aca56c67061420d618cc5a30f0fd4106b80
> Author: Eric Sesterhenn <snakebyte@gmx.de>
> Date:   Fri Jan 25 10:40:46 2008 +0100
> 
>     Removal of FUTEX_FD

Interesting - thanks.

OK, adjust my argument to reference signalfd, timerfs and pollfd.

I haven't looked at that code before - "anon_inode_getfd" gives you an fd on
an inode for which 
    (stat.st_mode & S_IFMT) == 0
Cool!  They have no format at all :-)

NeilBrown

  reply	other threads:[~2010-08-20 23:48 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-20  1:51 [PATCH -V18 0/13] Generic name to handle and open by handle syscalls Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 01/13] exportfs: Return the minimum required handle size Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 02/13] vfs: Add name to file handle conversion support Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 03/13] vfs: Add open by file handle support Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 04/13] vfs: Allow handle based open on symlinks Aneesh Kumar K.V
2010-08-20  2:13   ` Aneesh Kumar K. V
2010-08-20  6:53     ` Aneesh Kumar K. V
2010-08-20  8:30   ` Christoph Hellwig
2010-08-20  9:53     ` Neil Brown
2010-08-20 11:51       ` Al Viro
2010-08-21  0:09         ` Neil Brown
2010-08-21  7:13           ` Andreas Dilger
2010-08-21  9:32             ` Aneesh Kumar K. V
2010-08-22 23:06             ` Neil Brown
2010-08-23  1:24               ` Aneesh Kumar K. V
2010-08-23  1:52                 ` Neil Brown
2010-08-24 10:40                   ` Aneesh Kumar K. V
2010-08-23  2:49               ` Aneesh Kumar K. V
2010-08-25  2:06                 ` Neil Brown
2010-08-24  9:41               ` Bastien ROUCARIES
2010-08-25  2:04                 ` Neil Brown
2010-08-25  2:04                   ` Neil Brown
2010-08-25  9:13                   ` Bastien ROUCARIES
2010-08-21  8:30           ` Nick Piggin
2010-08-21  9:42             ` Aneesh Kumar K. V
2010-08-22  2:02               ` Aneesh Kumar K. V
2010-08-24  7:21               ` Nick Piggin
2010-08-24 10:34                 ` Aneesh Kumar K. V
2010-08-24 13:19                 ` J. Bruce Fields
2010-08-22 23:17             ` Neil Brown
2010-08-24  7:29               ` Nick Piggin
2010-08-21  9:31           ` Aneesh Kumar K. V
2010-08-20 13:25       ` Peter Zijlstra
2010-08-20 23:47         ` Neil Brown [this message]
2010-08-20 14:38     ` Aneesh Kumar K. V
2010-08-20  1:51 ` [PATCH -V18 05/13] vfs: Support null pathname in readlink Aneesh Kumar K.V
2010-08-20  8:32   ` Christoph Hellwig
2010-08-20 10:04     ` Neil Brown
2010-08-20 14:43     ` Aneesh Kumar K. V
2010-08-20  1:51 ` [PATCH -V18 06/13] vfs: Support null pathname in faccessat Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 07/13] vfs: Support null pathname in linkat Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 08/13] x86: Add new syscalls for x86_32 Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 09/13] x86: Add new syscalls for x86_64 Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 10/13] unistd.h: Add new syscalls numbers to asm-generic Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 11/13] vfs: Export file system uuid via /proc/<pid>/mountinfo Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 12/13] ext3: Copy fs UUID to superblock Aneesh Kumar K.V
2010-08-20  1:51 ` [PATCH -V18 13/13] ext4: " Aneesh Kumar K.V

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