FS_CLOSE_WRITE
BUILD_BUG_ON(FAN_CLOSE_WRITE != FS_CLOSE_WRITE);
BUILD_BUG_ON(IN_CLOSE_WRITE != FS_CLOSE_WRITE);
__u32 mask = (file->f_mode & FMODE_WRITE) ? FS_CLOSE_WRITE :
FS_CLOSE_WRITE | FS_CLOSE_NOWRITE | \