Using list_move() instead of list_del() + list_add() in dm-writecache.c.
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
---
drivers/md/dm-writecache.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index ea9f0d8fff1d..a809a616d691 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -1868,15 +1868,13 @@ static void writecache_writeback(struct work_struct *work)
if (unlikely(read_original_sector(wc, f) ==
read_original_sector(wc, e))) {
BUG_ON(!f->write_in_progress);
- list_del(&e->lru);
- list_add(&e->lru, &skipped);
+ list_move(&e->lru, &skipped);
cond_resched();
continue;
}
}
wc->writeback_size++;
- list_del(&e->lru);
- list_add(&e->lru, &wbl.list);
+ list_move(&e->lru, &wbl.list);
wbl.size++;
e->write_in_progress = true;
e->wc_list_contiguous = 1;
@@ -1911,8 +1909,7 @@ static void writecache_writeback(struct work_struct *work)
// break;
wc->writeback_size++;
- list_del(&g->lru);
- list_add(&g->lru, &wbl.list);
+ list_move(&g->lru, &wbl.list);
wbl.size++;
g->write_in_progress = true;
g->wc_list_contiguous = BIO_MAX_VECS;
--
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