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authorKeith Busch <keith.busch@intel.com>2015-10-02 02:14:10 +0300
committerJens Axboe <axboe@fb.com>2015-10-09 19:40:36 +0300
commit188c3568f814fea965947ed24739987ba9c5a87e (patch)
tree553e44c9332afce5890e573785ce9887cd01a7ac /include/linux/nvme.h
parent54ef2b96879334caf8803fdd93b4c556d709d6fd (diff)
downloadlinux-188c3568f814fea965947ed24739987ba9c5a87e.tar.xz
NVMe: Reference count open namespaces
Dynamic namespace attachment means the namespace may be removed at any time, so the namespace reference count can not be tied to the device reference count. This fixes a NULL dereference if an opened namespace is detached from a controller. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/nvme.h')
-rw-r--r--include/linux/nvme.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index b5812c395351..992b9c118678 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -135,6 +135,7 @@ struct nvme_ns {
struct nvme_dev *dev;
struct request_queue *queue;
struct gendisk *disk;
+ struct kref kref;
unsigned ns_id;
int lba_shift;