linux-kernel - [PATCH v3 041/110] link_path

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Message-Id: <1431367690-5223-41-git-send-email-viro@ZenIV.linux.org.uk>
Date:	Mon, 11 May 2015 19:07:01 +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 041/110] link_path_walk: massage a bit more

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

Pull the block after the if-else in the end of what used to be do-while
body into all branches there.  We are almost done with the massage...

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/namei.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index 6a0dd07..b7ba718 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1803,6 +1803,8 @@ loop:	/* will be gone very soon */
 			if (unlikely(!s)) {
 				/* jumped */
 				put_link(nd, &link, cookie);
+				current->link_count--;
+				nd->depth--;
 			} else {
 				if (*s == '/') {
 					if (!nd->root.mnt)
@@ -1816,18 +1818,23 @@ loop:	/* will be gone very soon */
 				err = link_path_walk(s, nd);
 				if (unlikely(err)) {
 					put_link(nd, &link, cookie);
+					current->link_count--;
+					nd->depth--;
+					return err;
 				} else {
 					err = walk_component(nd, LOOKUP_FOLLOW);
 					put_link(nd, &link, cookie);
-					if (err > 0)
+					current->link_count--;
+					nd->depth--;
+					if (err < 0)
+						return err;
+					if (err > 0) {
+						current->link_count++;
+						nd->depth++;
 						goto loop;
+					}
 				}
 			}
-
-			current->link_count--;
-			nd->depth--;
-			if (err)
-				return err;
 		}
 		if (!d_can_lookup(nd->path.dentry)) {
 			err = -ENOTDIR;
-- 
2.1.4

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