From: Roland Dreier <rdreier@cisco.com>
Date: Fri, 18 Dec 2009 17:41:24 +0000 (-0800)
Subject: anonfd: Allow making anon files read-only
X-Git-Tag: v2.6.33-rc2~23^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=628ff7c1d8d8466a5ad8078bd0206a130f8b8a51;p=pandora-kernel.git

anonfd: Allow making anon files read-only

It seems a couple places such as arch/ia64/kernel/perfmon.c and
drivers/infiniband/core/uverbs_main.c could use anon_inode_getfile()
instead of a private pseudo-fs + alloc_file(), if only there were a way
to get a read-only file.  So provide this by having anon_inode_getfile()
create a read-only file if we pass O_RDONLY in flags.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

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