sysfs: Update the name hash when renaming sysfs entries

This fixes a bug introduced with sysfs name hashes where renaming a network device appears to succeed but silently makes the sysfs files for that network device inaccessible. In at least one configuration this bug has stopped networking from coming up during boot. Signed-off-by: Eric W. Biederman <[email protected]> Tested-by: Jiri Slaby <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
chewitt · Jan 31, 2012 · d5c38b1 · d5c38b1
1 parent 07d2514
commit d5c38b1
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
@@ -872,6 +872,7 @@ 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. */