linux-kernel - [PATCH] sysfs: Update the name hash for an entry after changing the namespace

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Date:	Wed, 4 Apr 2012 12:06:20 -0700
From:	Tom Goff <thomas.goff@...ing.com>
To:	linux-kernel@...r.kernel.org
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] sysfs: Update the name hash for an entry after changing the namespace

This is needed to allow renaming network devices that have been moved
to another network namespace.

Signed-off-by: Tom Goff <thomas.goff@...ing.com>
---
 fs/sysfs/dir.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 2a7a3f5..8ddc102 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -878,7 +878,6 @@ int sysfs_rename(struct sysfs_dirent *sd,
 
 		dup_name = sd->s_name;
 		sd->s_name = new_name;
-		sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name);
 	}
 
 	/* Move to the appropriate place in the appropriate directories rbtree. */
@@ -886,6 +885,7 @@ int sysfs_rename(struct sysfs_dirent *sd,
 	sysfs_get(new_parent_sd);
 	sysfs_put(sd->s_parent);
 	sd->s_ns = new_ns;
+	sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name);
 	sd->s_parent = new_parent_sd;
 	sysfs_link_sibling(sd);
 
-- 
1.7.5.4

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