[PATCH 6/7] f2fs: fix deadlock in add_link failure

From: Jaegeuk Kim
Date: Wed Jun 08 2016 - 13:25:34 EST


mkdir sync_dirty_inode
- init_inode_metadata
- lock_page(node)
- make_empty_dir
- filemap_fdatawrite()
- do_writepages
- lock_page(data)
- write_page(data)
- lock_page(node)
- f2fs_init_acl
- error
- truncate_inode_pages
- lock_page(data)

So, we don't need to truncate data pages in this error case, which will
be done by f2fs_evict_inode.

Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---
fs/f2fs/dir.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index f6ab3c2..4864824 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -450,9 +450,6 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
return page;

put_error:
- /* truncate empty dir pages */
- truncate_inode_pages(&inode->i_data, 0);
-
clear_nlink(inode);
update_inode(inode, page);
f2fs_put_page(page, 1);
--
2.8.3