Unverified Commit 0880d9db authored Jan 15, 2025 by openeuler-ci-bot Committed by Gitee Jan 15, 2025

!14854 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/MDCWL4VYJSN52T4ROQTMTNOOUKTQCIVI/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBG2PL 
 
Link:https://gitee.com/openeuler/kernel/pulls/14854

 

Reviewed-by: Li Nan <linan122@huawei.com>
Signed-off-by: Li Nan <linan122@huawei.com>

parents 06b319b4 d0694d07

fs/btrfs/relocation.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -2732,7 +2732,7 @@ static int relocate_file_extent_cluster(struct inode *inode,
		PAGE_SIZE);
		if (ret)
		goto out;

		again:
		page = find_lock_page(inode->i_mapping, index);
		if (!page) {
		page_cache_sync_readahead(inode->i_mapping,
		@@ -2769,6 +2769,11 @@ static int relocate_file_extent_cluster(struct inode *inode,
		ret = -EIO;
		goto out;
		}
		if (page->mapping != inode->i_mapping) {
		unlock_page(page);
		put_page(page);
		goto again;
		}
		}

		page_start = page_offset(page);