From: David Howells <dhowells@redhat.com>
Date: Tue, 17 Mar 2015 17:33:52 +0000 (+0000)
Subject: VFS: Combine inode checks with d_is_negative() and d_is_positive() in pathwalk
X-Git-Tag: omap-for-v4.1/fixes-rc1~116^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=698934df8b45da2a06816ee2d7f9a9034e671e62;p=pandora-kernel.git

VFS: Combine inode checks with d_is_negative() and d_is_positive() in pathwalk

Where we have:

    	if (!dentry->d_inode || d_is_negative(dentry)) {

type constructions in pathwalk we should be able to eliminate the check of
d_inode and rely solely on the result of d_is_negative() or d_is_positive().

What we do have to take care to do is to read d_inode after calling a
d_is_xxx() typecheck function to get the barriering right.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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