[PATCH 3/3] lightnvm: pblk: fix smeta write error path

From: Hans Holmberg
Date: Thu Apr 19 2018 - 12:40:29 EST


From: Hans Holmberg <hans.holmberg@xxxxxxxxxxxx>

Smeta write errors were previously ignored. Skip these
lines instead and throw them back on the free
list, so the chunks will go through a reset cycle
before we attempt to use the line again.

Signed-off-by: Hans Holmberg <hans.holmberg@xxxxxxxxxxxx>
---
drivers/lightnvm/pblk-core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index f6135e4..485fe8c 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -849,9 +849,10 @@ static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
atomic_dec(&pblk->inflight_io);

if (rqd.error) {
- if (dir == PBLK_WRITE)
+ if (dir == PBLK_WRITE) {
pblk_log_write_err(pblk, &rqd);
- else if (dir == PBLK_READ)
+ ret = 1;
+ } else if (dir == PBLK_READ)
pblk_log_read_err(pblk, &rqd);
}

@@ -1120,7 +1121,7 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,

if (init && pblk_line_submit_smeta_io(pblk, line, off, PBLK_WRITE)) {
pr_debug("pblk: line smeta I/O failed. Retry\n");
- return 1;
+ return 0;
}

bitmap_copy(line->invalid_bitmap, line->map_bitmap, lm->sec_per_line);
--
2.7.4