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path: root/drivers/lightnvm/pblk-gc.c
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Diffstat (limited to 'drivers/lightnvm/pblk-gc.c')
-rw-r--r--drivers/lightnvm/pblk-gc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
index b8323e34d1bc..00d5698d64a9 100644
--- a/drivers/lightnvm/pblk-gc.c
+++ b/drivers/lightnvm/pblk-gc.c
@@ -218,7 +218,13 @@ next_rq:
gc_rq_ws->line = line;
gc_rq_ws->priv = gc_rq;
- down(&gc->gc_sem);
+ /* The write GC path can be much slower than the read GC one due to
+ * the budget imposed by the rate-limiter. Balance in case that we get
+ * back pressure from the write GC path.
+ */
+ while (down_timeout(&gc->gc_sem, msecs_to_jiffies(30000)))
+ io_schedule();
+
kref_get(&line->ref);
INIT_WORK(&gc_rq_ws->ws, pblk_gc_line_ws);