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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Browse source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  rbd: fix safety of rbd_put_client()
  rbd: fix a memory leak in rbd_get_client()
  ceph: create a new session lock to avoid lock inversion
  ceph: fix length validation in parse_reply_info()
  ceph: initialize client debugfs outside of monc->mutex
  ceph: change "ceph.layout" xattr to be "ceph.file.layout"
This commit is contained in:
Linus Torvalds 2012-02-02 15:47:33 -08:00
commit 6c073a7ee2
8 changed files with 36 additions and 15 deletions
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7
drivers/block/rbd.c
View file

@ -380,6 +380,7 @@ static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr,
rbdc = __rbd_client_find(opt);
if (rbdc) {
ceph_destroy_options(opt);
kfree(rbd_opts);
/* using an existing client */
kref_get(&rbdc->kref);
@ -406,15 +407,15 @@ done_err:
/*
* Destroy ceph client
*
* Caller must hold node_lock.
*/
static void rbd_client_release(struct kref *kref)
{
struct rbd_client *rbdc = container_of(kref, struct rbd_client, kref);
dout("rbd_release_client %p\n", rbdc);
spin_lock(&node_lock);
list_del(&rbdc->node);
spin_unlock(&node_lock);
ceph_destroy_client(rbdc->client);
kfree(rbdc->rbd_opts);
@ -427,7 +428,9 @@ static void rbd_client_release(struct kref *kref)
*/
static void rbd_put_client(struct rbd_device *rbd_dev)
{
spin_lock(&node_lock);
kref_put(&rbd_dev->rbd_client->kref, rbd_client_release);
spin_unlock(&node_lock);
rbd_dev->rbd_client = NULL;
rbd_dev->client = NULL;
}