[PATCH 04/13] lightnvm: pblk: Rollback in gc read

Igor Konopko
2019-02-27T17:17:52Z

Currently in case of error returned by pblk_gc_line
to pblk_gc_read we leave current line unassigned
from all the lists. This patch fixes that issue.

Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
---
drivers/lightnvm/pblk-gc.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
index 511ed0d5333c..533da6ea3e15 100644
--- a/drivers/lightnvm/pblk-gc.c
+++ b/drivers/lightnvm/pblk-gc.c
@@ -361,8 +361,13 @@ static int pblk_gc_read(struct pblk *pblk)

pblk_gc_kick(pblk);

- if (pblk_gc_line(pblk, line))
+ if (pblk_gc_line(pblk, line)) {
pblk_err(pblk, "failed to GC line %d\n", line->id);
+ /* rollback */
+ spin_lock(&gc->r_lock);
+ list_add_tail(&line->list, &gc->r_list);
+ spin_unlock(&gc->r_lock);
+ }

return 0;
}
--
2.17.1