On 2/9/22 4:28 PM, Christoph Hellwig wrote:
REQ_OP_WRITE_SAME was only ever submitted by the legacy Linux zeroing
code, which has switched to use REQ_OP_WRITE_ZEROES long before rnbd was
even merged.
Signed-off-by: Christoph Hellwig<hch@xxxxxx>
---
drivers/block/rnbd/rnbd-clt.c | 7 ++-----
drivers/block/rnbd/rnbd-clt.h | 1 -
drivers/block/rnbd/rnbd-proto.h | 6 ------
drivers/block/rnbd/rnbd-srv.c | 3 +--
4 files changed, 3 insertions(+), 14 deletions(-)
diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c
index c08971de369fc..dc192d2738854 100644
--- a/drivers/block/rnbd/rnbd-clt.c
+++ b/drivers/block/rnbd/rnbd-clt.c
@@ -82,7 +82,6 @@ static int rnbd_clt_set_dev_attr(struct rnbd_clt_dev *dev,
dev->nsectors = le64_to_cpu(rsp->nsectors);
dev->logical_block_size = le16_to_cpu(rsp->logical_block_size);
dev->physical_block_size = le16_to_cpu(rsp->physical_block_size);
- dev->max_write_same_sectors = le32_to_cpu(rsp->max_write_same_sectors);
dev->max_discard_sectors = le32_to_cpu(rsp->max_discard_sectors);
dev->discard_granularity = le32_to_cpu(rsp->discard_granularity);
dev->discard_alignment = le32_to_cpu(rsp->discard_alignment);
@@ -1359,8 +1358,6 @@ static void setup_request_queue(struct rnbd_clt_dev *dev)
blk_queue_logical_block_size(dev->queue, dev->logical_block_size);
blk_queue_physical_block_size(dev->queue, dev->physical_block_size);
blk_queue_max_hw_sectors(dev->queue, dev->max_hw_sectors);
- blk_queue_max_write_same_sectors(dev->queue,
- dev->max_write_same_sectors);
/*
* we don't support discards to "discontiguous" segments
@@ -1610,10 +1607,10 @@ struct rnbd_clt_dev *rnbd_clt_map_device(const char *sessname,
}
rnbd_clt_info(dev,
- "map_device: Device mapped as %s (nsectors: %zu, logical_block_size: %d, physical_block_size: %d, max_write_same_sectors: %d, max_discard_sectors: %d, discard_granularity: %d, discard_alignment: %d, secure_discard: %d, max_segments: %d, max_hw_sectors: %d, rotational: %d, wc: %d, fua: %d)\n",
+ "map_device: Device mapped as %s (nsectors: %zu, logical_block_size: %d, physical_block_size: %d, max_discard_sectors: %d, discard_granularity: %d, discard_alignment: %d, secure_discard: %d, max_segments: %d, max_hw_sectors: %d, rotational: %d, wc: %d, fua: %d)\n",
dev->gd->disk_name, dev->nsectors,
dev->logical_block_size, dev->physical_block_size,
- dev->max_write_same_sectors, dev->max_discard_sectors,
+ dev->max_discard_sectors,
dev->discard_granularity, dev->discard_alignment,
dev->secure_discard, dev->max_segments,
dev->max_hw_sectors, dev->rotational, dev->wc, dev->fua);
diff --git a/drivers/block/rnbd/rnbd-clt.h b/drivers/block/rnbd/rnbd-clt.h
index 0c2cae7f39b9f..6946ba23d62e5 100644
--- a/drivers/block/rnbd/rnbd-clt.h
+++ b/drivers/block/rnbd/rnbd-clt.h
@@ -122,7 +122,6 @@ struct rnbd_clt_dev {
bool wc;
bool fua;
u32 max_hw_sectors;
- u32 max_write_same_sectors;
u32 max_discard_sectors;
u32 discard_granularity;
u32 discard_alignment;
I am planning to remove more members inside struct rnbd_clt_dev.
diff --git a/drivers/block/rnbd/rnbd-proto.h b/drivers/block/rnbd/rnbd-proto.h
index de5d5a8df81d7..3eb8b34bd1886 100644
--- a/drivers/block/rnbd/rnbd-proto.h
+++ b/drivers/block/rnbd/rnbd-proto.h
@@ -249,9 +249,6 @@ static inline u32 rnbd_to_bio_flags(u32 rnbd_opf)
case RNBD_OP_SECURE_ERASE:
bio_opf = REQ_OP_SECURE_ERASE;
break;
- case RNBD_OP_WRITE_SAME:
- bio_opf = REQ_OP_WRITE_SAME;
- break;
default:
WARN(1, "Unknown RNBD type: %d (flags %d)\n",
rnbd_op(rnbd_opf), rnbd_opf);
@@ -284,9 +281,6 @@ static inline u32 rq_to_rnbd_flags(struct request *rq)
case REQ_OP_SECURE_ERASE:
rnbd_opf = RNBD_OP_SECURE_ERASE;
break;
- case REQ_OP_WRITE_SAME:
- rnbd_opf = RNBD_OP_WRITE_SAME;
- break;
case REQ_OP_FLUSH:
rnbd_opf = RNBD_OP_FLUSH;
break;
diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c
index 132e950685d59..0e6b5687f8321 100644
--- a/drivers/block/rnbd/rnbd-srv.c
+++ b/drivers/block/rnbd/rnbd-srv.c
@@ -548,8 +548,7 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
cpu_to_le16(rnbd_dev_get_max_segs(rnbd_dev));
rsp->max_hw_sectors =
cpu_to_le32(rnbd_dev_get_max_hw_sects(rnbd_dev));
- rsp->max_write_same_sectors =
- cpu_to_le32(bdev_write_same(rnbd_dev->bdev));
+ rsp->max_write_same_sectors = 0;
IIUC, I think we can delete max_write_same_sectors from rsp as well given
the earlier change in setup_request_queue and rnbd_clt_set_dev_attr.
Thanks,
Guoqing
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