linux-kernel - Re: [PATCH/RFC 1/2] anon-inodes: Remove fd_install() from anon_inode

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Message-ID: <ada7igqyurw.fsf@cisco.com>
Date:	Wed, 27 Feb 2008 13:05:55 -0800
From:	Roland Dreier <rdreier@...co.com>
To:	Davide Libenzi <davidel@...ilserver.org>
Cc:	Christoph Hellwig <hch@....de>, linux-fsdevel@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Avi Kivity <avi@...ranet.com>, kvm-devel@...ts.sourceforge.net,
	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@....linux.org.uk>
Subject: Re: [PATCH/RFC 1/2] anon-inodes: Remove fd_install() from anon_inode_getfd()

 > http://git.kernel.org/?p=linux/kernel/git/viro/vfs-2.6.git;a=commit;h=49be4f8114e6ff0efdab10ebba2493fb67bc3034
 > 
 > I'm fine with both approaches.

Both ways are OK with me too, although Al's change leaves the trap in
the anon_inode_getfd() in that all users have to keep in mind the race
against close() from another thread.  Also Al's change moves all
documentation to __anon_inode_getfd() and leaves anon_inode_getfd()
undocumented, which is a little suboptimal.

With Al's change the 2/2 patch would have to change uverbs to use the
__anon_inode_getfd() variant and change the fd_install() in uverbs to
use fput().  If there is consensus that Al's patch will be merged for
2.6.26 I will write that patch and send it to Al to merge via his
tree, so that get_empty_filp() can be unexported.

 - R.
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