From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Date: Thu, 1 Aug 2019 10:26:35 -0700
Subject: [PATCH] block: add req op to reset all zones and flag
References: bsc#1156419,jsc#SLE-8281
Git-commit: e84e8f0663956f45c747df5629046794cff93893
Patch-mainline: v5.4-rc1
This patch introduces a new request operation REQ_OP_ZONE_RESET_ALL.
This is useful for the applications like mkfs where it needs to reset
all the zones present on the underlying block device. As part for this
patch we also introduce new QUEUE_FLAG_ZONE_RESETALL which indicates the
queue zone reset all capability and corresponding helper macro.
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
include/linux/blk_types.h | 2 ++
include/linux/blkdev.h | 3 +++
2 files changed, 5 insertions(+)
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index feff3fe4467e..3991b580d6bd 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -282,6 +282,8 @@ enum req_opf {
REQ_OP_ZONE_RESET = 6,
/* write the same sector many times */
REQ_OP_WRITE_SAME = 7,
+ /* reset all the zone present on the device */
+ REQ_OP_ZONE_RESET_ALL = 8,
/* write the zero filled sector many times */
REQ_OP_WRITE_ZEROES = 9,
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 21e3a7292e2a..1e463098fac8 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -614,6 +614,7 @@ struct request_queue {
#define QUEUE_FLAG_SCSI_PASSTHROUGH 23 /* queue supports SCSI commands */
#define QUEUE_FLAG_QUIESCED 24 /* queue has been quiesced */
#define QUEUE_FLAG_PCI_P2PDMA 25 /* device supports PCI p2p requests */
+#define QUEUE_FLAG_ZONE_RESETALL 26 /* supports Zone Reset All */
#define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_SAME_COMP))
@@ -633,6 +634,8 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
#define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags)
#define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags)
#define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags)
+#define blk_queue_zone_resetall(q) \
+ test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags)
#define blk_queue_secure_erase(q) \
(test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
#define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
--
2.16.4