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nvme: factor out a add nvme_is_write helper

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Centralize the check if a given NVMe command reads or writes data.

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Jay Freyensee <james.p.freyensee@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2016-06-06 23:20:49 +02:00
committed by Jens Axboe
parent a229dbf61e
commit 7a5abb4b48
2 changed files with 7 additions and 3 deletions
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5
include/linux/nvme.h
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@@ -590,6 +590,11 @@ struct nvme_command {
};
};
static inline bool nvme_is_write(struct nvme_command *cmd)
{
return cmd->common.opcode & 1;
}
enum {
NVME_SC_SUCCESS = 0x0,
NVME_SC_INVALID_OPCODE = 0x1,