From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 17 Jul 2011 14:52:14 +0000 (-0400)
Subject: switch d_add_ci() to d_splice_alias() in "found negative" case as well
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4513d899c418ff69052420e29e354e4c64b3ef76;p=linux-beck.git

switch d_add_ci() to d_splice_alias() in "found negative" case as well

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

diff --git a/fs/dcache.c b/fs/dcache.c
index 2762804a140d..d1d6b3349ec7 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1652,26 +1652,12 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode,
 	 * Negative dentry: instantiate it unless the inode is a directory and
 	 * already has a dentry.
 	 */
-	spin_lock(&inode->i_lock);
-	if (!S_ISDIR(inode->i_mode) || list_empty(&inode->i_dentry)) {
-		__d_instantiate(found, inode);
-		spin_unlock(&inode->i_lock);
-		security_d_instantiate(found, inode);
-		return found;
+	new = d_splice_alias(inode, found);
+	if (new) {
+		dput(found);
+		found = new;
 	}
-
-	/*
-	 * In case a directory already has a (disconnected) entry grab a
-	 * reference to it, move it in place and use it.
-	 */
-	new = list_entry(inode->i_dentry.next, struct dentry, d_alias);
-	__dget(new);
-	spin_unlock(&inode->i_lock);
-	security_d_instantiate(found, inode);
-	d_move(new, found);
-	iput(inode);
-	dput(found);
-	return new;
+	return found;
 
 err_out:
 	iput(inode);