diff options
Diffstat (limited to 'drivers/md/dm-writecache.c')
| -rw-r--r-- | drivers/md/dm-writecache.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index 30505d70f423..cfea054863a4 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -1244,7 +1244,7 @@ static int writecache_flush_thread(void *data) bio_end_sector(bio)); wc_unlock(wc); bio_set_dev(bio, wc->dev->bdev); - generic_make_request(bio); + submit_bio_noacct(bio); } else { writecache_flush(wc); wc_unlock(wc); @@ -1752,7 +1752,7 @@ static void writecache_writeback(struct work_struct *work) { struct dm_writecache *wc = container_of(work, struct dm_writecache, writeback_work); struct blk_plug plug; - struct wc_entry *f, *uninitialized_var(g), *e = NULL; + struct wc_entry *f, *g, *e = NULL; struct rb_node *node, *next_node; struct list_head skipped; struct writeback_list wbl; @@ -2266,6 +2266,12 @@ invalid_optional: } if (WC_MODE_PMEM(wc)) { + if (!dax_synchronous(wc->ssd_dev->dax_dev)) { + r = -EOPNOTSUPP; + ti->error = "Asynchronous persistent memory not supported as pmem cache"; + goto bad; + } + r = persistent_memory_claim(wc); if (r) { ti->error = "Unable to map persistent memory for cache"; |