[RFC PATCH -next v3 03/10] nvme-multipath: add BLK_FEAT_WRITE_ZEROES_UNMAP support
From: Zhang Yi <hidden>
Date: 2025-03-18 07:44:14
Also in:
dm-devel, linux-ext4, linux-fsdevel, linux-nvme, linux-scsi, linux-xfs, lkml
Subsystem:
nvm express driver, the rest · Maintainers:
Keith Busch, Jens Axboe, Christoph Hellwig, Sagi Grimberg, Linus Torvalds
From: Zhang Yi <yi.zhang@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.zhang@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 2a7635565083..82f12209446f 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