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| author | Greg Kroah-Hartman <gregkh@suse.de> | 2007-11-28 10:46:22 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-01-24 20:40:25 -0800 |
| commit | cfb36fff45e3997b8044c81045fc4869ba5f281a (patch) | |
| tree | 35a58ea81b5864bfd68b8de65c791cf92729b072 /lib/kobject.c | |
| parent | d76e15fb20eeb7632ef38876a884fe3508b2c01d (diff) | |
| download | lwn-cfb36fff45e3997b8044c81045fc4869ba5f281a.tar.gz lwn-cfb36fff45e3997b8044c81045fc4869ba5f281a.zip | |
kobject: grab the kset reference in kobject_add, not kobject_init
kobject_init should not be grabing any references, but only initializing
the object. This patch fixes this, and makes the lock hold-time shorter
for when a kset is present in the kobject.
The current kernel tree has been audited to verify that this change
should be safe.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib/kobject.c')
| -rw-r--r-- | lib/kobject.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/kobject.c b/lib/kobject.c index 7919c32a3a15..4d52b6f534bc 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -133,7 +133,6 @@ void kobject_init(struct kobject * kobj) return; kref_init(&kobj->kref); INIT_LIST_HEAD(&kobj->entry); - kobj->kset = kset_get(kobj->kset); } @@ -184,7 +183,7 @@ int kobject_add(struct kobject * kobj) kobj->kset ? kobject_name(&kobj->kset->kobj) : "<NULL>" ); if (kobj->kset) { - spin_lock(&kobj->kset->list_lock); + kobj->kset = kset_get(kobj->kset); if (!parent) { parent = kobject_get(&kobj->kset->kobj); @@ -196,7 +195,8 @@ int kobject_add(struct kobject * kobj) kobject_get(parent); } - list_add_tail(&kobj->entry,&kobj->kset->list); + spin_lock(&kobj->kset->list_lock); + list_add_tail(&kobj->entry, &kobj->kset->list); spin_unlock(&kobj->kset->list_lock); kobj->parent = parent; } |