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| author | Ming Lei <ming.lei@redhat.com> | 2021-10-14 10:17:08 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-20 02:27:58 +0200 |
| commit | 9e6a6b1212100148c109675e003369e3e219dbd9 (patch) | |
| tree | f24a5eb087fcc4117c2049c7bb2850ed112ec241 /drivers/nvme/host/nvme.h | |
| parent | nvme: prepare for pairing quiescing and unquiescing (diff) | |
| download | linux-9e6a6b1212100148c109675e003369e3e219dbd9.tar.xz linux-9e6a6b1212100148c109675e003369e3e219dbd9.zip | |
nvme: paring quiesce/unquiesce
The current blk_mq_quiesce_queue() and blk_mq_unquiesce_queue() always
stops and starts the queue unconditionally. And there can be concurrent
quiesce/unquiesce coming from different unrelated code paths, so
unquiesce may come unexpectedly and start queue too early.
Prepare for supporting concurrent quiesce/unquiesce from multiple
contexts, so that we can address the above issue.
NVMe has very complicated quiesce/unquiesce use pattern, add one atomic
bit for makeiing sure that blk-mq quiece/unquiesce is always called in
pair.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211014081710.1871747-5-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index e7af00860452..3652439a7458 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -342,6 +342,7 @@ struct nvme_ctrl { int nr_reconnects; unsigned long flags; #define NVME_CTRL_FAILFAST_EXPIRED 0 +#define NVME_CTRL_ADMIN_Q_STOPPED 1 struct nvmf_ctrl_options *opts; struct page *discard_page; @@ -463,6 +464,7 @@ struct nvme_ns { #define NVME_NS_ANA_PENDING 2 #define NVME_NS_FORCE_RO 3 #define NVME_NS_READY 4 +#define NVME_NS_STOPPED 5 struct cdev cdev; struct device cdev_device; |