diff options
| author | Keith Busch <kbusch@kernel.org> | 2024-02-05 11:10:25 -0800 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2024-02-13 08:46:09 -0800 |
| commit | 29f6975332479f92233594901c649ff4d71f8cb6 (patch) | |
| tree | f8661b9341d4ff76fb375705bb3bbffb8052bbe1 /include | |
| parent | 79bd7eab8366b29eaa099908d5694cb473684b9d (diff) | |
nvme: implement support for relaxed effects
NVM Express TP4167 provides a way for controllers to report a relaxed
execution constraint. Specifically, it notifies of exclusivity for IO
vs. admin commands instead of grouping these together. If set, then we
don't need to freeze IO in order to execute that admin command. The
freezing distrupts IO processes, so it's nice to avoid that if the
controller tells us it's not necessary.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/nvme.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h index bc605ec4a3fd..3ef4053ea950 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -646,6 +646,7 @@ enum { NVME_CMD_EFFECTS_NCC = 1 << 2, NVME_CMD_EFFECTS_NIC = 1 << 3, NVME_CMD_EFFECTS_CCC = 1 << 4, + NVME_CMD_EFFECTS_CSER_MASK = GENMASK(15, 14), NVME_CMD_EFFECTS_CSE_MASK = GENMASK(18, 16), NVME_CMD_EFFECTS_UUID_SEL = 1 << 19, NVME_CMD_EFFECTS_SCOPE_MASK = GENMASK(31, 20), |