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Commit 7f7cfffe authored by Tejun Heo's avatar Tejun Heo Committed by Greg Kroah-Hartman
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sysfs: fix parent refcounting during rename and move 



Parent reference wasn't properly transferred during rename and move.
Fix it.

Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 42b37df6

fs/sysfs/dir.c

+6 −0
Original line number Diff line number Diff line
@@ -497,6 +497,9 @@ int sysfs_rename_dir(struct kobject * kobj, struct dentry *new_parent, 
	d_move(kobj->dentry, new_dentry);



	list_del_init(&sd->s_sibling);

	sysfs_get(parent_sd);

	sysfs_put(sd->s_parent);

	sd->s_parent = parent_sd;

	list_add(&sd->s_sibling, &parent_sd->s_children);



	error = 0;
@@ -550,6 +553,9 @@ again: 


	/* Remove from old parent's list and insert into new parent's list. */

	list_del_init(&sd->s_sibling);

	sysfs_get(new_parent_sd);

	sysfs_put(sd->s_parent);

	sd->s_parent = new_parent_sd;

	list_add(&sd->s_sibling, &new_parent_sd->s_children);



out: