[PATCH 5.8 163/232] f2fs: compress: fix to update isize when overwriting compressed file

[Greg Kroah-Hartman]

From: Chao Yu <yuch...@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 <yuch...@huawei.com>
Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
Signed-off-by: Sasha Levin <sas...@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 326c63879ddc8..6e9017e6a8197 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3432,6 +3432,10 @@ 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