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| author | Ming Lei <[email protected]> | 2021-10-14 08:17:08 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-10-20 00:27:58 +0000 |
| commit | 9e6a6b1212100148c109675e003369e3e219dbd9 (patch) | |
| tree | f24a5eb087fcc4117c2049c7bb2850ed112ec241 /fs/btrfs/dev-replace.c | |
| parent | nvme: prepare for pairing quiescing and unquiescing (diff) | |
| download | kernel-9e6a6b1212100148c109675e003369e3e219dbd9.tar.gz kernel-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 <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
0 files changed, 0 insertions, 0 deletions