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authorChristoph Hellwig <hch@lst.de>2016-06-07 00:20:49 +0300
committerJens Axboe <axboe@fb.com>2016-06-12 16:29:43 +0300
commit7a5abb4b48570c3552e33ff4c72ae1e8dac3ba15 (patch)
tree00d0e86f8fad328d1e788c060c8b9687bc5f898a /include/linux/nvme.h
parenta229dbf61e03b70d98f5ed46f476d6369870a6ab (diff)
downloadlinux-7a5abb4b48570c3552e33ff4c72ae1e8dac3ba15.tar.xz
nvme: factor out a add nvme_is_write helper
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>
Diffstat (limited to 'include/linux/nvme.h')
-rw-r--r--include/linux/nvme.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 2b82f05fe4ec..dc815cc6718d 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -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,