From: Christoph Hellwig <hch@lst.de>
Date: Thu, 2 Nov 2017 18:29:49 +0000 (+0300)
Subject: block: add REQ_DRV bit
X-Git-Tag: Ubuntu-5.10.0-12.13~9043^2~84
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=96222bcc732d0504363dc772637c50e53b4bd41e;p=mirror_ubuntu-hirsute-kernel.git

block: add REQ_DRV bit

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>
---

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index c4c6c8bced2e..1b04085255fb 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)