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nvmet: add helper to revalidate bdev and file ns 

This patch adds a wrapper helper to indicate size change in the bdev &
file-backed namespace when revalidating ns. This helper is needed in
order to minimize code repetition in the next patch for configfs.c and
existing admin-cmd.c.  

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimbeg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Chaitanya Kulkarni 2020-05-19 01:06:27 -07:00 committed by Christoph Hellwig
parent 696ece7513
commit 463c5fabb8
3 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/nvme/target/admin-cmd.c
View File

@ -486,10 +486,7 @@ static void nvmet_execute_identify_ns(struct nvmet_req *req)
if (!ns)
goto done;
if (ns->bdev)
nvmet_bdev_ns_revalidate(ns);
else
nvmet_file_ns_revalidate(ns);
nvmet_ns_revalidate(ns);
/*
* nuse = ncap = nsze isn't always true, but we have no way to find

8
drivers/nvme/target/core.c
View File

@ -515,6 +515,14 @@ static void nvmet_p2pmem_ns_add_p2p(struct nvmet_ctrl *ctrl,
ns->nsid);
}
void nvmet_ns_revalidate(struct nvmet_ns *ns)
{
if (ns->bdev)
nvmet_bdev_ns_revalidate(ns);
else
nvmet_file_ns_revalidate(ns);
}
int nvmet_ns_enable(struct nvmet_ns *ns)
{
struct nvmet_subsys *subsys = ns->subsys;

1
drivers/nvme/target/nvmet.h
View File

@ -500,6 +500,7 @@ u16 nvmet_file_flush(struct nvmet_req *req);
void nvmet_ns_changed(struct nvmet_subsys *subsys, u32 nsid);
void nvmet_bdev_ns_revalidate(struct nvmet_ns *ns);
int nvmet_file_ns_revalidate(struct nvmet_ns *ns);
void nvmet_ns_revalidate(struct nvmet_ns *ns);
static inline u32 nvmet_rw_len(struct nvmet_req *req)
{