[PATCH v4 12/20] nvme: add context annotations for nvme_ctrl::ana_lock

[Nilay Shroff]

nvme_parse_ana_log() accesses ANA state protected by ctrl->ana_lock and
therefore requires callers to hold the lock.

Annotate nvme_parse_ana_log() with __must_hold(&ctrl->ana_lock) so that
Clang's lock context analysis can verify the locking requirement at
compile time.

Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Nilay Shroff <nilay@xxxxxxxxxxxxx>
---
 drivers/nvme/host/multipath.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 698d79a97045..d714852ddc01 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -829,6 +829,7 @@ static void nvme_mpath_set_live(struct nvme_ns *ns)
 static int nvme_parse_ana_log(struct nvme_ctrl *ctrl, void *data,
 		int (*cb)(struct nvme_ctrl *ctrl, struct nvme_ana_group_desc *,
 			void *))
+		__must_hold(&ctrl->ana_lock)
 {
 	void *base = ctrl->ana_log_buf;
 	size_t offset = sizeof(struct nvme_ana_rsp_hdr);
-- 
2.53.0