From: Keith Busch <kbusch@kernel.org>
Date: Wed, 29 Apr 2020 20:31:23 +0000 (+0900)
Subject: nvme: flush scan work on passthrough commands
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b04df85d9a05d7ee4b3f93c1a22312b41a949ec1;p=linux.git

nvme: flush scan work on passthrough commands

If a passthrough command causes the namespace inventory or capabilities
to change, flush the scan work that handles these changes so the driver
synchronizes with the user command's effects before returning the result
to user space.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 35e279261c7d9..4a124a28118f6 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1404,8 +1404,10 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
 	}
 	if (effects & NVME_CMD_EFFECTS_CCC)
 		nvme_init_identify(ctrl);
-	if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC))
+	if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC)) {
 		nvme_queue_scan(ctrl);
+		flush_work(&ctrl->scan_work);
+	}
 }
 
 static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns,