From: Shaun Tancheff Date: Tue, 18 Oct 2016 06:40:32 +0000 (+0900) Subject: block: Define zoned block device operations X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2d253440b5afb128d22ccdae812dde9ba77a2cca;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git block: Define zoned block device operations Define REQ_OP_ZONE_REPORT and REQ_OP_ZONE_RESET for handling zones of host-managed and host-aware zoned block devices. With with these two new operations, the total number of operations defined reaches 8 and still fits with the 3 bits definition of REQ_OP_BITS. Signed-off-by: Shaun Tancheff Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe --- diff --git a/block/blk-core.c b/block/blk-core.c index 14d7c0740dc0..e4eda5d2aa56 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1941,6 +1941,10 @@ generic_make_request_checks(struct bio *bio) case REQ_OP_WRITE_SAME: if (!bdev_write_same(bio->bi_bdev)) goto not_supported; + case REQ_OP_ZONE_REPORT: + case REQ_OP_ZONE_RESET: + if (!bdev_is_zoned(bio->bi_bdev)) + goto not_supported; break; default: break; diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index cd395ecec99d..dd50dce89a80 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -243,6 +243,8 @@ enum req_op { REQ_OP_SECURE_ERASE, /* request to securely erase sectors */ REQ_OP_WRITE_SAME, /* write same block many times */ REQ_OP_FLUSH, /* request for cache flush */ + REQ_OP_ZONE_REPORT, /* Get zone information */ + REQ_OP_ZONE_RESET, /* Reset a zone write pointer */ }; #define REQ_OP_BITS 3