Commit 013a63ef authored Apr 02, 2019 by Max Gurtovoy Committed by Christoph Hellwig Apr 05, 2019

nvmet: add safety check for subsystem lock during nvmet_ns_changed



we need to make sure that subsystem lock is taken during ctrl's list
traversing. nvmet_ns_changed function is not static and can be used from
various callers simultaneously.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

parent e84c2091

drivers/nvme/target/core.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -214,6 +214,8 @@ void nvmet_ns_changed(struct nvmet_subsys *subsys, u32 nsid)
		{
		struct nvmet_ctrl *ctrl;

		lockdep_assert_held(&subsys->lock);

		list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {
		nvmet_add_to_changed_ns_log(ctrl, cpu_to_le32(nsid));
		if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_NS_ATTR))