From: Zhang Xiaoxu zhangxiaoxu5@huawei.com
[ Upstream commit 5618303d8516f8ac5ecfe53ee8e8bc9a40eaf066 ]
As the man description of the truncate, if the size changed, then the st_ctime and st_mtime fields should be updated. But in cifs, we doesn't do it.
It lead the xfstests generic/313 failed.
So, add the ATTR_MTIME|ATTR_CTIME flags on attrs when change the file size
Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Zhang Xiaoxu zhangxiaoxu5@huawei.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/cifs/inode.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index bdce714e94489..b76e733952997 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -2210,6 +2210,15 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs, if (rc == 0) { cifsInode->server_eof = attrs->ia_size; cifs_setsize(inode, attrs->ia_size); + + /* + * The man page of truncate says if the size changed, + * then the st_ctime and st_mtime fields for the file + * are updated. + */ + attrs->ia_ctime = attrs->ia_mtime = current_time(inode); + attrs->ia_valid |= ATTR_CTIME | ATTR_MTIME; + cifs_truncate_page(inode->i_mapping, inode->i_size); }