[RFC PATCH v4 03/11] nvme-multipath: add BLK_FEAT_WRITE_ZEROES_UNMAP support

[Zhang Yi]

From: Zhang Yi <yi.zh...@huawei.com>

Set the BLK_FEAT_WRITE_ZEROES_UNMAP feature while creating multipath
stacking queue limits by default. This feature shall be disabled if any
attached namespace does not support it.

Signed-off-by: Zhang Yi <yi.zh...@huawei.com>
---
 drivers/nvme/host/multipath.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 05eccd96d34a..1880ad09559a 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -638,7 +638,8 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct 
nvme_ns_head *head)
 
        blk_set_stacking_limits(&lim);
        lim.dma_alignment = 3;
-       lim.features |= BLK_FEAT_IO_STAT | BLK_FEAT_NOWAIT | BLK_FEAT_POLL;
+       lim.features |= BLK_FEAT_IO_STAT | BLK_FEAT_NOWAIT | BLK_FEAT_POLL |
+                       BLK_FEAT_WRITE_ZEROES_UNMAP;
        if (head->ids.csi == NVME_CSI_ZNS)
                lim.features |= BLK_FEAT_ZONED;
 
-- 
2.46.1