[PATCH 5.7 142/204] f2fs: compress: fix to update isize when overwriting compressed file

Greg Kroah-Hartman
2020-08-20T09:41:33Z

From: Chao Yu <yuchao0@huawei.com>

[ Upstream commit 944dd22ea4475bd11180fd2f431a4a547ca4d8f5 ]

We missed to update isize of compressed file in write_end() with
below case:

cluster size is 16KB

- write 14KB data from offset 0
- overwrite 16KB data from offset 0

Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/f2fs/data.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 10491ae1cb850..329afa55a581c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3353,6 +3353,10 @@ static int f2fs_write_end(struct file *file,
if (f2fs_compressed_file(inode) && fsdata) {
f2fs_compress_write_end(inode, fsdata, page->index, copied);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
+
+ if (pos + copied > i_size_read(inode) &&
+ !f2fs_verity_in_progress(inode))
+ f2fs_i_size_write(inode, pos + copied);
return copied;
}
#endif
--
2.25.1