f2fs: fix to recover inode's project id during POR

Testcase to reproduce this bug:
1. mkfs.f2fs -O extra_attr -O project_quota /dev/sdd
2. mount -t f2fs /dev/sdd /mnt/f2fs
3. touch /mnt/f2fs/file
4. sync
5. chattr -p 1 /mnt/f2fs/file
6. xfs_io -f /mnt/f2fs/file -c "fsync"
7. godown /mnt/f2fs
8. umount /mnt/f2fs
9. mount -t f2fs /dev/sdd /mnt/f2fs
10. lsattr -p /mnt/f2fs/file

    0 -----------------N- /mnt/f2fs/file

But actually, we expect the correct result is:

    1 -----------------N- /mnt/f2fs/file

The reason is we didn't recover inode.i_projid field during mount,
fix it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 41f2c0fe6d8e..2b59e37d9093 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -211,6 +211,19 @@ static void recover_inode(struct inode *inode, struct page *page)
 	inode->i_mode = le16_to_cpu(raw->i_mode);
 	i_uid_write(inode, le32_to_cpu(raw->i_uid));
 	i_gid_write(inode, le32_to_cpu(raw->i_gid));
+
+	if (raw->i_inline & F2FS_EXTRA_ATTR) {
+		if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
+			F2FS_FITS_IN_INODE(raw, le16_to_cpu(raw->i_extra_isize),
+								i_projid)) {
+			projid_t i_projid;
+
+			i_projid = (projid_t)le32_to_cpu(raw->i_projid);
+			F2FS_I(inode)->i_projid =
+				make_kprojid(&init_user_ns, i_projid);
+		}
+	}
+
 	f2fs_i_size_write(inode, le64_to_cpu(raw->i_size));
 	inode->i_atime.tv_sec = le64_to_cpu(raw->i_atime);
 	inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime);