From 8e53624d44c1de31b1b0d4f500703669418a4c67 Mon Sep 17 00:00:00 2001 From: Javier González Date: Mon, 28 Nov 2016 22:39:10 +0100 Subject: lightnvm: eliminate nvm_lun abstraction in mm MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In order to naturally support multi-target instances on an Open-Channel SSD, targets should own the LUNs they get blocks from and manage provisioning internally. This is done in several steps. Since targets own the LUNs the are instantiated on top of and manage the free block list internally, there is no need for a LUN abstraction in the media manager. LUNs are intrinsically managed as in the physical layout (ch:0,lun:0, ..., ch:0,lun:n, ch:1,lun:0, ch:1,lun:n, ..., ch:m,lun:0, ch:m,lun:n) and given to the targets based on the target creation ioctl. This simplifies LUN management and clears the path for a partition manager to sit directly underneath LightNVM targets. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/nvme/host/lightnvm.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/nvme') diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c index 1cdc8124c8c0..588d4a34c083 100644 --- a/drivers/nvme/host/lightnvm.c +++ b/drivers/nvme/host/lightnvm.c @@ -371,6 +371,9 @@ static int nvme_nvm_get_l2p_tbl(struct nvm_dev *nvmdev, u64 slba, u32 nlb, return -EINVAL; } + /* Transform physical address to target address space */ + nvmdev->mt->part_to_tgt(nvmdev, entries, cmd_nlb); + if (update_l2p(cmd_slba, cmd_nlb, entries, priv)) { ret = -EINTR; goto out; -- cgit v1.2.3-59-g8ed1b