linux-kernel - [PATCH v3 054/110] link_path_walk: nd->depth massage, part 3

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Message-Id: <1431367690-5223-54-git-send-email-viro@ZenIV.linux.org.uk>
Date:	Mon, 11 May 2015 19:07:14 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Neil Brown <neilb@...e.de>, Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH v3 054/110] link_path_walk: nd->depth massage, part 3

From: Al Viro <viro@...iv.linux.org.uk>

remove decrement/increment surrounding nd_alloc_stack(), adjust the
test in it.

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/namei.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index a403425..3df4731 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -539,7 +539,7 @@ static int __nd_alloc_stack(struct nameidata *nd)
 
 static inline int nd_alloc_stack(struct nameidata *nd)
 {
-	if (likely(nd->depth != EMBEDDED_LEVELS - 1))
+	if (likely(nd->depth != EMBEDDED_LEVELS))
 		return 0;
 	if (likely(nd->stack != nd->internal))
 		return 0;
@@ -1824,9 +1824,7 @@ Walked:
 		if (err) {
 			const char *s;
 
-			nd->depth--;
 			err = nd_alloc_stack(nd);
-			nd->depth++;
 			if (unlikely(err)) {
 				path_to_nameidata(&nd->link, nd);
 				break;
-- 
2.1.4

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