6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chao Yu <chao@xxxxxxxxxx>
[ Upstream commit ebd3309aec6271c4616573b0cb83ea25e623070a ]
We should always truncate pagecache while truncating on-disk data.
Fixes: a46bebd502fe ("f2fs: synchronize atomic write aborts")
Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/f2fs/file.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index e04f4dcb76d1f..2f08bf7f29621 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2161,6 +2161,10 @@ static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
F2FS_I(fi->cow_inode)->atomic_inode = inode;
} else {
/* Reuse the already created COW inode */
+ f2fs_bug_on(sbi, get_dirty_pages(fi->cow_inode));
+
+ invalidate_mapping_pages(fi->cow_inode->i_mapping, 0, -1);
+
ret = f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
if (ret) {
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
--
2.43.0
