From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun, 28 Nov 2010 22:09:57 +0000 (-0800)
Subject: Export 'get_pipe_info()' to other users
X-Git-Tag: v2.6.37-rc4~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c66fb347946ebdd5b10908866ecc9fa05ee2cf3d;p=pandora-kernel.git

Export 'get_pipe_info()' to other users

And in particular, use it in 'pipe_fcntl()'.

The other pipe functions do not need to use the 'careful' version, since
they are only ever called for things that are already known to be pipes.

The normal read/write/ioctl functions are called through the file
operations structures, so if a file isn't a pipe, they'd never get
called.  But pipe_fcntl() is special, and called directly from the
generic fcntl code, and needs to use the same careful function that the
splice code is using.

Cc: Jens Axboe <jaxboe@fusionio.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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