lightnvm: pblk: delete redundant buffer pointer

After refactoring the metadata path, the backpointer controlling
synced I/Os in a line becomes unnecessary; metadata is scheduled
on the write thread, thus we know when the end of the line is reached
and act on it directly.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 3 insertions, 15 deletions

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 6e4b06f841e7..beae1618483f 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -65,8 +65,8 @@ static void pblk_end_io_erase(struct nvm_rq *rqd)
         mempool_free(rqd, pblk->g_rq_pool);
 }
 
-static void __pblk_map_invalidate(struct pblk *pblk, struct pblk_line *line,
-                                  u64 paddr)
+void __pblk_map_invalidate(struct pblk *pblk, struct pblk_line *line,
+                           u64 paddr)
 {
         struct pblk_line_mgmt *l_mg = &pblk->l_mg;
         struct list_head *move_list = NULL;
@@ -129,18 +129,6 @@ void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa)
         __pblk_map_invalidate(pblk, line, paddr);
 }
 
-void pblk_map_pad_invalidate(struct pblk *pblk, struct pblk_line *line,
-                             u64 paddr)
-{
-        __pblk_map_invalidate(pblk, line, paddr);
-
-        pblk_rb_sync_init(&pblk->rwb, NULL);
-        line->left_ssecs--;
-        if (!line->left_ssecs)
-                pblk_line_run_ws(pblk, line, NULL, pblk_line_close_ws);
-        pblk_rb_sync_end(&pblk->rwb, NULL);
-}
-
 static void pblk_invalidate_range(struct pblk *pblk, sector_t slba,
                                   unsigned int nr_secs)
 {
@@ -1057,7 +1045,7 @@ retry_smeta:
         line->sec_in_line -= lm->emeta_sec[0];
         line->emeta_ssec = off;
         line->nr_valid_lbas = 0;
-        line->left_ssecs = line->left_msecs = line->sec_in_line;
+        line->left_msecs = line->sec_in_line;
         *line->vsc = cpu_to_le32(line->sec_in_line);
 
         if (lm->sec_per_line - line->sec_in_line !=