Unverified Commit 97ae5e9d authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!3082 fs/dirty_pages: add last read check in seq_read_dirty() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zizhi Wo <wozizhi@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/Z2PGGVKB3BCZJYLGNVYDDEYL64T7UZJQ/ 
 
https://gitee.com/openeuler/kernel/issues/I8JUUC?from=project-issue 
 
Link:https://gitee.com/openeuler/kernel/pulls/3082

 

Reviewed-by: default avatarYu Kuai <yukuai3@huawei.com>
Reviewed-by: default avatarzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents b65c0c4f d1478376

fs/dirty_pages.c

+3 −0
Original line number Diff line number Diff line
@@ -218,6 +218,9 @@ static ssize_t seq_read_dirty( 
	}



	n = min(m->count - m->from, size);

	/* check if this is the last read */

	if (n == 0)

		goto done;

	n -= copy_to_user(buf, m->buf + m->from, n);

	if (unlikely(!n)) {

		err = -EFAULT;