[PATCH 3/9] block: add REQ_DRV bit
From: Christoph Hellwig <hch@lst.de>
Date: 2017-09-18 23:14:47
Also in:
linux-nvme
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Set aside a bit in the request/bio flags for driver use. Signed-off-by: Christoph Hellwig <hch@lst.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 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)
--
2.14.1