From mboxrd@z Thu Jan 1 00:00:00 1970 From: hch@lst.de (Christoph Hellwig) Date: Mon, 18 Sep 2017 16:14:47 -0700 Subject: [PATCH 3/9] block: add REQ_DRV bit In-Reply-To: <20170918231453.27128-1-hch@lst.de> References: <20170918231453.27128-1-hch@lst.de> Message-ID: <20170918231453.27128-4-hch@lst.de> Set aside a bit in the request/bio flags for driver use. Signed-off-by: Christoph Hellwig --- 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