Unverified Commit 9731a4c0 authored Feb 05, 2025 by openeuler-ci-bot Committed by Gitee Feb 05, 2025

!14833 btrfs: check folio mapping after unlock in relocate_one_folio()

Merge Pull Request from: @ci-robot 
 
PR sync from: Yongjian Sun <sunyongjian1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/BMAYULX7DT5ZC7TSTJQ7N6SQOKUTOVM5/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBG2PL 
 
Link:https://gitee.com/openeuler/kernel/pulls/14833

 

Reviewed-by: Zhang Peng <zhangpeng362@huawei.com>
Signed-off-by: Zhang Peng <zhangpeng362@huawei.com>

parents 55a03c12 a1170a19

fs/btrfs/relocation.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -2931,6 +2931,7 @@ static int relocate_one_page(struct inode inode, struct file_ra_state ra,
		int ret;

		ASSERT(page_index <= last_index);
		again:
		page = find_lock_page(inode->i_mapping, page_index);
		if (!page) {
		page_cache_sync_readahead(inode->i_mapping, ra, NULL,
		@@ -2952,6 +2953,11 @@ static int relocate_one_page(struct inode inode, struct file_ra_state ra,
		ret = -EIO;
		goto release_page;
		}
		if (page->mapping != inode->i_mapping) {
		unlock_page(page);
		put_page(page);
		goto again;
		}
		}

		/*