f2fs: avoid clear valid page
In f2fs_delete_entry, if last dirent is remove from the dentry page,
we will try to punch that page since it has no valid date in it.
But truncate_hole which is used for punching could fail because of
no memory or IO error, if that happened, we'd better skip clearing
this valid dentry page.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index a34ebd8..8f15fc13 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -718,8 +718,8 @@
if (inode)
f2fs_drop_nlink(dir, inode, NULL);
- if (bit_pos == NR_DENTRY_IN_BLOCK) {
- truncate_hole(dir, page->index, page->index + 1);
+ if (bit_pos == NR_DENTRY_IN_BLOCK &&
+ !truncate_hole(dir, page->index, page->index + 1)) {
clear_page_dirty_for_io(page);
ClearPagePrivate(page);
ClearPageUptodate(page);