From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 22 Aug 2012 02:32:06 +0000 (-0400)
Subject: new helper: iterate_fd()
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~36^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3c073f808b22dfae15ef8412b6f7b998644139a;p=pandora-kernel.git

new helper: iterate_fd()

iterates through the opened files in given descriptor table,
calling a supplied function; we stop once non-zero is returned.
Callback gets struct file *, descriptor number and const void *
argument passed to iterator.  It is called with files->file_lock
held, so it is not allowed to block.

tty_io, netprio_cgroup and selinux flush_unauthorized_files()
converted to its use.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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