diff mbox

[02/17] block: add REQ_DRV bit

Message ID 20171018165258.23212-3-hch@lst.de (mailing list archive)
State New, archived
Headers show

Commit Message

Christoph Hellwig Oct. 18, 2017, 4:52 p.m. UTC 
Set aside a bit in the request/bio flags for driver use.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
---
 include/linux/blk_types.h | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Hannes Reinecke Oct. 19, 2017, 5:48 a.m. UTC | #1 
On 10/18/2017 06:52 PM, Christoph Hellwig wrote:
> Set aside a bit in the request/bio flags for driver use.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
> ---
>  include/linux/blk_types.h | 5 +++++
>  1 file changed, 5 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
Johannes Thumshirn Oct. 19, 2017, 6:47 a.m. UTC | #2 
Looks good,
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
diff mbox

Patch

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index acc2f3cdc2fc..7ec2ed097a8a 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -229,6 +229,9 @@  enum req_flag_bits {
 	/* command specific flags for REQ_OP_WRITE_ZEROES: */
 	__REQ_NOUNMAP,		/* do not free blocks when zeroing */
 
+	/* for driver use */
+	__REQ_DRV,
+
 	__REQ_NR_BITS,		/* stops here */
 };
 
@@ -249,6 +252,8 @@  enum req_flag_bits {
 
 #define REQ_NOUNMAP		(1ULL << __REQ_NOUNMAP)
 
+#define REQ_DRV			(1ULL << __REQ_DRV)
+
 #define REQ_FAILFAST_MASK \
 	(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)