From: Christoph Hellwig <hch@lst.de>
Date: Thu, 2 Nov 2017 21:29:49 +0300
Subject: [PATCH] block: add REQ_DRV bit
Git-commit: 96222bcc732d0504363dc772637c50e53b4bd41e
Patch-Mainline: v4.15-rc1
References: FATE#323952, FATE#322506
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>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.de>
---
include/linux/blk_types.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index acc2f3c..7ec2ed0 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)
--
1.8.5.6