From: Sagi Grimberg Date: Wed, 22 Jul 2020 23:32:18 +0000 (-0700) Subject: nvme: document nvme controller states X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4212f4e94633f3403c3871d11213badc50b3f6e4;p=linux.git nvme: document nvme controller states We are starting to see some non-trivial states so lets start documenting them. Signed-off-by: Sagi Grimberg Signed-off-by: Christoph Hellwig --- diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 2ee91a3dd8e0d..92629758b77ca 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -181,6 +181,20 @@ static inline u16 nvme_req_qid(struct request *req) */ #define NVME_QUIRK_DELAY_AMOUNT 2300 +/* + * enum nvme_ctrl_state: Controller state + * + * @NVME_CTRL_NEW: New controller just allocated, initial state + * @NVME_CTRL_LIVE: Controller is connected and I/O capable + * @NVME_CTRL_RESETTING: Controller is resetting (or scheduled reset) + * @NVME_CTRL_CONNECTING: Controller is disconnected, now connecting the + * transport + * @NVME_CTRL_DELETING: Controller is deleting (or scheduled deletion) + * @NVME_CTRL_DEAD: Controller is non-present/unresponsive during + * shutdown or removal. In this case we forcibly + * kill all inflight I/O as they have no chance to + * complete + */ enum nvme_ctrl_state { NVME_CTRL_NEW, NVME_CTRL_LIVE,