In preparation of supporting RAIL, add a new API pblk_submit_io_sem which
takes the lun semaphore before submitting the asynchronous request.
Signed-off-by: Heiner Litz <hlitz@xxxxxxxx>
---
drivers/lightnvm/pblk-core.c | 11 +++++++++++
drivers/lightnvm/pblk.h | 1 +
2 files changed, 12 insertions(+)
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 2e40666fdf80..a31bf359f905 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -492,6 +492,17 @@ int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd)
return nvm_submit_io(dev, rqd);
}
+int pblk_submit_io_sem(struct pblk *pblk, struct nvm_rq *rqd)
+{
+ struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
+ int ret;
+
+ pblk_down_chunk(pblk, ppa_list[0]);
+ ret = pblk_submit_io(pblk, rqd);
+
+ return ret;
+}
+
void pblk_check_chunk_state_update(struct pblk *pblk, struct nvm_rq *rqd)
{
struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 64d9c206ec52..bd88784e51d9 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -797,6 +797,7 @@ struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk,
void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd);
void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd);
+int pblk_submit_io_sem(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line);
--
2.17.1
