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nvme: set gendisk read only based on nsattr

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NVMe 1.3 TP 4005 introduces new filed (NSATTR). This field indicates
whether given namespace is write protected or not. This patch sets the
gendisk associated with the namespace to read only based on the identify
namespace nsattr field.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Chaitanya Kulkarni 2018-08-07 23:01:06 -07:00 committed by Christoph Hellwig
parent 93045d5942
commit 1293477f4f
1 changed files with 6 additions and 0 deletions
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6
drivers/nvme/host/core.c
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@ -1484,6 +1484,12 @@ static void nvme_update_disk_info(struct gendisk *disk,
set_capacity(disk, capacity);
nvme_config_discard(ns);
if (id->nsattr & (1 << 0))
set_disk_ro(disk, true);
else
set_disk_ro(disk, false);
blk_mq_unfreeze_queue(disk->queue);
}