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Code Issues Releases Wiki Activity

dm writecache: use list_move instead of list_del/list_add in writecache_writeback()

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Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Baokun Li 2021-06-09 15:04:33 +08:00 committed by Mike Snitzer
parent 991bd8d7bc
commit 8c77f1cb84
1 changed files with 3 additions and 6 deletions
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9
drivers/md/dm-writecache.c
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@ -1864,15 +1864,13 @@ 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;
@ -1907,8 +1905,7 @@ 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;